Weakness (CWE)
CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary.
How to prevent it (7 mitigations)
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Requirements
Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
For example, many languages that perform their own memory management, such as Java and Perl, are not subject to buffer overflows. Other languages, such as Ada and C#, typically provide overflow protection, but the protection can be disabled by the programmer.
Be wary that a language's interface to native code may still be subject to overflows, even if the language itself is theoretically safe.
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Architecture and Design
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
Examples include the Safe C String Library (SafeStr) by Messier and Viega [REF-57], and the Strsafe.h library from Microsoft [REF-56]. These libraries provide safer versions of overflow-prone string-handling functions.
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Operation, Build and Compilation
Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index checking.
D3-SFCV (Stack Frame Canary Validation) from D3FEND [REF-1334] discusses canary-based detection in detail.
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Implementation
Consider adhering to the following rules when allocating and managing an application's memory:
- Double check that the buffer is as large as specified.
- When using functions that accept a number of bytes to copy, such as strncpy(), be aware that if the destination buffer size is equal to the source buffer size, it may not NULL-terminate the string.
- Check buffer boundaries if accessing the buffer in a loop and make sure there is no danger of writing past the allocated space.
- If necessary, truncate all input strings to a reasonable length before passing them to the copy and concatenation functions.
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Operation, Build and Compilation
Run or compile the software using features or extensions that randomly arrange the positions of a program's executable and libraries in memory. Because this makes the addresses unpredictable, it can prevent an attacker from reliably jumping to exploitable code.
Examples include Address Space Layout Randomization (ASLR) [REF-58] [REF-60] and Position-Independent Executables (PIE) [REF-64]. Imported modules may be similarly realigned if their default memory addresses conflict with other modules, in a process known as "rebasing" (for Windows) and "prelinking" (for Linux) [REF-1332] using randomly generated addresses. ASLR for libraries cannot be used in conjunction with prelink since it would require relocating the libraries at run-time, defeating the whole purpose of prelinking.
For more information on these techniques see D3-SAOR (Segment Address Offset Randomization) from D3FEND [REF-1335].
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Operation
Use a CPU and operating system that offers Data Execution Protection (using hardware NX or XD bits) or the equivalent techniques that simulate this feature in software, such as PaX [REF-60] [REF-61]. These techniques ensure that any instruction executed is exclusively at a memory address that is part of the code segment.
For more information on these techniques see D3-PSEP (Process Segment Execution Prevention) from D3FEND [REF-1336].
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Implementation
Replace unbounded copy functions with analogous functions that support length arguments, such as strcpy with strncpy. Create these if they are not available.
Source: MITRE CWE-119
3,733 results · Feed
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Critical 9.8
Apache NuttX RTOS: examples/xmlrpc: Fix calls buffers size.
Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability was discovered in Apache NuttX RTOS apps/exapmles/xmlrpc application. In this example application device stats structure that stored remotely provided parameters had hardcod…
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Medium 5.3
Open Asset Import Library Assimp BVHLoader.cpp ReadNodeChannels use after free
A vulnerability classified as critical has been found in Open Asset Import Library Assimp up to 5.4.3. Affected is the function Assimp::BVHLoader::ReadNodeChannels in the library assimp/code/AssetLib/BVH/BVHLoader.cpp. The manipulation of the argument pNode l…
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High 8.8
D-Link DIR-619L form_macfilter stack-based overflow
A vulnerability was found in D-Link DIR-619L 2.06B01 and classified as critical. Affected by this issue is the function form_macfilter. The manipulation of the argument mac_hostname_%d/sched_name_%d leads to stack-based buffer overflow. The attack may be laun…
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High 8.8
D-Link DIR-619L form_portforwarding stack-based overflow
A vulnerability has been found in D-Link DIR-619L 2.06B01 and classified as critical. Affected by this vulnerability is the function form_portforwarding of the file /goform/form_portforwarding. The manipulation of the argument ingress_name_%d/sched_name_%d/na…
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High 8.8
Tenda FH1203 AdvSetLanip fromadvsetlanip buffer overflow
A vulnerability, which was classified as critical, was found in Tenda FH1203 2.0.1.6. Affected is the function fromadvsetlanip of the file /goform/AdvSetLanip. The manipulation of the argument lanMask leads to buffer overflow. It is possible to launch the att…
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High 8.8
Tenda FH1205 AdvSetLanip fromadvsetlanip buffer overflow
A vulnerability, which was classified as critical, has been found in Tenda FH1205 2.0.0.7. This issue affects the function fromadvsetlanip of the file /goform/AdvSetLanip. The manipulation of the argument lanMask leads to buffer overflow. The attack may be in…
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High 8.8
Tenda FH1205 VirtualSer fromVirtualSer stack-based overflow
A vulnerability classified as critical was found in Tenda FH1205 2.0.0.7(775). This vulnerability affects the function fromVirtualSer of the file /goform/VirtualSer. The manipulation of the argument page leads to stack-based buffer overflow. The attack can be…
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High 8.8
Tenda FH1201 SafeMacFilter stack-based overflow
A vulnerability classified as critical has been found in Tenda FH1201 1.2.0.14(408). This affects an unknown part of the file /goform/SafeMacFilter. The manipulation of the argument page leads to stack-based buffer overflow. It is possible to initiate the att…
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Critical 9.8
UTT 进取 750W API setSysAdm strcpy buffer overflow
A vulnerability was found in UTT 进取 750W up to 5.0. It has been classified as critical. This affects the function strcpy of the file /goform/setSysAdm of the component API. The manipulation of the argument passwd1 leads to buffer overflow. It is possible to i…
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Medium 5.5
uYanki board-stm32f103rc-berial heartrate1_hal.c heartrate1_i2c_hal_write stack-based overflow
A vulnerability classified as critical was found in uYanki board-stm32f103rc-berial up to 84daed541609cb7b46854cc6672a275d1007e295. This vulnerability affects the function heartrate1_i2c_hal_write of the file 7.Example/hal/i2c/max30100/Manual/demo2/2/heartrat…
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High 8.8
H3C GR-3000AX aspForm UpdateIpv6Params buffer overflow
A vulnerability was found in H3C GR-3000AX V100R007L50. It has been classified as critical. Affected is the function UpdateWanParamsMulti/UpdateIpv6Params of the file /routing/goform/aspForm. The manipulation of the argument param leads to buffer overflow. It…
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High 8.8
H3C GR-5400AX aspForm UpdateIpv6params buffer overflow
A vulnerability was found in H3C GR-5400AX V100R009L50 and classified as critical. This issue affects the function UpdateWanparamsMulti/UpdateIpv6params of the file /routing/goform/aspForm. The manipulation of the argument param leads to buffer overflow. The …
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High 8.8
Tenda FH1202 VirtualSer fromVirtualSer stack-based overflow
A vulnerability was found in Tenda FH1202 1.2.0.14. It has been classified as critical. Affected is the function fromVirtualSer of the file /goform/VirtualSer. The manipulation of the argument page leads to stack-based buffer overflow. It is possible to launc…
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High 8.8
D-Link DIR-632 HTTP POST Request biurl_grou FUN_00425fd8 stack-based overflow
A vulnerability has been found in D-Link DIR-632 FW103B08 and classified as critical. Affected by this vulnerability is the function FUN_00425fd8 of the file /biurl_grou of the component HTTP POST Request Handler. The manipulation leads to stack-based buffer …
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High 8.8
Netgear EX3700 mtd sub_41619C stack-based overflow
A vulnerability was found in Netgear EX3700 up to 1.0.0.88. It has been classified as critical. Affected is the function sub_41619C of the file /mtd. The manipulation leads to stack-based buffer overflow. It is possible to launch the attack remotely. The expl…
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High 8.8
D-Link DIR-632 HTTP POST Request do_file stack-based overflow
A vulnerability was found in D-Link DIR-632 FW103B08. It has been declared as critical. This vulnerability affects the function do_file of the component HTTP POST Request Handler. The manipulation leads to stack-based buffer overflow. The attack can be initia…
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High 8.8
TOTOLINK EX1200T HTTP POST Request formDMZ buffer overflow
A vulnerability was found in TOTOLINK EX1200T up to 4.1.2cu.5232_B20210713 and classified as critical. Affected by this issue is some unknown functionality of the file /boafrm/formDMZ of the component HTTP POST Request Handler. The manipulation leads to buffe…
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High 8.8
TOTOLINK EX1200T HTTP POST Request formWsc buffer overflow
A vulnerability has been found in TOTOLINK EX1200T up to 4.1.2cu.5232_B20210713 and classified as critical. Affected by this vulnerability is an unknown functionality of the file /boafrm/formWsc of the component HTTP POST Request Handler. The manipulation lea…
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High 8.8
TOTOLINK EX1200T HTTP POST Request formReflashClientTbl buffer overflow
A vulnerability, which was classified as critical, was found in TOTOLINK EX1200T up to 4.1.2cu.5232_B20210713. Affected is an unknown function of the file /boafrm/formReflashClientTbl of the component HTTP POST Request Handler. The manipulation leads to buffe…
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High 8.8
TOTOLINK EX1200T HTTP POST Request formIpQoS buffer overflow
A vulnerability, which was classified as critical, has been found in TOTOLINK EX1200T up to 4.1.2cu.5232_B20210713. This issue affects some unknown processing of the file /boafrm/formIpQoS of the component HTTP POST Request Handler. The manipulation leads to …
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High 8.8
TOTOLINK EX1200T HTTP POST Request formFilter buffer overflow
A vulnerability classified as critical was found in TOTOLINK EX1200T up to 4.1.2cu.5232_B20210713. This vulnerability affects unknown code of the file /boafrm/formFilter of the component HTTP POST Request Handler. The manipulation leads to buffer overflow. Th…
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High 8.8CVE-2025-5905 EPSS 12%
TOTOLINK T10 POST Request cstecgi.cgi setWiFiRepeaterCfg buffer overflow
A vulnerability was found in TOTOLINK T10 4.1.8cu.5207. It has been rated as critical. Affected by this issue is the function setWiFiRepeaterCfg of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument Password …
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High 8.8CVE-2025-5904 EPSS 12%
TOTOLINK T10 POST Request cstecgi.cgi setWiFiMeshName buffer overflow
A vulnerability was found in TOTOLINK T10 4.1.8cu.5207. It has been declared as critical. Affected by this vulnerability is the function setWiFiMeshName of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument d…
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High 8.8CVE-2025-5903 EPSS 12%
TOTOLINK T10 POST Request cstecgi.cgi setWiFiAclRules buffer overflow
A vulnerability was found in TOTOLINK T10 4.1.8cu.5207. It has been classified as critical. Affected is the function setWiFiAclRules of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument desc leads to buffer …
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High 8.8
TOTOLINK T10 POST Request cstecgi.cgi setUpgradeFW buffer overflow
A vulnerability was found in TOTOLINK T10 4.1.8cu.5207 and classified as critical. This issue affects the function setUpgradeFW of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument slaveIpList leads to buffe…
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High 8.8
TOTOLINK T10 POST Request cstecgi.cgi UploadCustomModule buffer overflow
A vulnerability has been found in TOTOLINK T10 4.1.8cu.5207 and classified as critical. This vulnerability affects the function UploadCustomModule of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument File le…
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Medium 5.3
GNU PSPP pspp-convert.c parse_variables_option out-of-bounds write
A vulnerability classified as critical has been found in GNU PSPP 82fb509fb2fedd33e7ac0c46ca99e108bb3bdffb. Affected is the function parse_variables_option of the file utilities/pspp-convert.c. The manipulation leads to out-of-bounds write. The attack needs t…
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High 8.8
TP-LINK Technologies TL-IPC544EP-W4 main sub_69064 buffer overflow
A vulnerability classified as critical has been found in TP-LINK Technologies TL-IPC544EP-W4 1.0.9 Build 240428 Rel 69493n. Affected is the function sub_69064 of the file /bin/main. The manipulation of the argument text leads to buffer overflow. It is possibl…
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High 8.0
RT-Thread lwp_syscall.c sys_recvfrom memory corruption
A vulnerability, which was classified as critical, was found in RT-Thread 5.1.0. Affected is the function sys_recvfrom of the file rt-thread/components/lwp/lwp_syscall.c. The manipulation of the argument from leads to memory corruption.
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High 8.0
RT-Thread lwp_syscall.c sys_thread_sigprocmask array index
A vulnerability, which was classified as critical, has been found in RT-Thread 5.1.0. This issue affects the function sys_thread_sigprocmask of the file rt-thread/components/lwp/lwp_syscall.c. The manipulation of the argument how leads to improper validation …
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High 8.0
RT-Thread lwp_syscall.c sys_sigprocmask array index
A vulnerability classified as critical has been found in RT-Thread 5.1.0. This affects the function sys_sigprocmask of the file rt-thread/components/lwp/lwp_syscall.c. The manipulation of the argument how leads to improper validation of array index.
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High 8.0
RT-Thread Parameter lwp_syscall.c sys_select memory corruption
A vulnerability was found in RT-Thread 5.1.0. It has been rated as critical. Affected by this issue is the function sys_select of the file rt-thread/components/lwp/lwp_syscall.c of the component Parameter Handler. The manipulation of the argument timeout lead…
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High 8.8
Tenda AC5 SetRebootTimer formSetRebootTimer stack-based overflow
A vulnerability was found in Tenda AC5 15.03.06.47. It has been classified as critical. Affected is the function formSetRebootTimer of the file /goform/SetRebootTimer. The manipulation of the argument rebootTime leads to stack-based buffer overflow. It is pos…
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High 8.8
Tenda AC7 setPptpUserList formSetPPTPUserList buffer overflow
A vulnerability was found in Tenda AC7 15.03.06.44 and classified as critical. This issue affects the function formSetPPTPUserList of the file /goform/setPptpUserList. The manipulation of the argument list leads to buffer overflow. The attack may be initiated…
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High 8.8
Tenda AC7 AdvSetLanip fromadvsetlanip buffer overflow
A vulnerability has been found in Tenda AC7 15.03.06.44 and classified as critical. This vulnerability affects the function fromadvsetlanip of the file /goform/AdvSetLanip. The manipulation of the argument lanMask leads to buffer overflow. The attack can be i…
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High 8.8
Tenda AC6 SetRebootTimer formSetRebootTimer stack-based overflow
A vulnerability, which was classified as critical, was found in Tenda AC6 15.03.05.16. This affects the function formSetRebootTimer of the file /goform/SetRebootTimer. The manipulation of the argument rebootTime leads to stack-based buffer overflow. It is pos…
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High 8.8
Tenda AC6 AdvSetLanip fromadvsetlanip buffer overflow
A vulnerability, which was classified as critical, has been found in Tenda AC6 15.03.05.16. Affected by this issue is the function fromadvsetlanip of the file /goform/AdvSetLanip. The manipulation of the argument lanMask leads to buffer overflow. The attack m…
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High 8.8
Tenda AC6 SetRemoteWebCfg formSetSafeWanWebMan stack-based overflow
A vulnerability classified as critical was found in Tenda AC6 15.03.05.16. Affected by this vulnerability is the function formSetSafeWanWebMan of the file /goform/SetRemoteWebCfg. The manipulation of the argument remoteIp leads to stack-based buffer overflow.…
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High 8.8
Tenda AC6 setPptpUserList formSetPPTPUserList buffer overflow
A vulnerability classified as critical has been found in Tenda AC6 15.03.05.16. Affected is the function formSetPPTPUserList of the file /goform/setPptpUserList. The manipulation of the argument list leads to buffer overflow. It is possible to launch the atta…
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High 8.8
Tenda AC15 HTTP POST Request AdvSetLanip fromadvsetlanip buffer overflow
A vulnerability was found in Tenda AC15 15.03.05.19_multi. It has been rated as critical. This issue affects the function fromadvsetlanip of the file /goform/AdvSetLanip of the component HTTP POST Request Handler. The manipulation of the argument lanMask lead…