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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Low 3.3
HDF5 H5Gnode.c H5G__node_cmp3 stack-based overflow
A vulnerability has been found in HDF5 1.14.6 and classified as problematic. Affected by this vulnerability is the function H5G__node_cmp3 of the file src/H5Gnode.c. The manipulation leads to stack-based buffer overflow. It is possible to launch the attack on…
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Low 3.3
HDF5 H5FL.c H5FL__reg_gc_list use after free
A vulnerability, which was classified as problematic, was found in HDF5 1.14.6. Affected is the function H5FL__reg_gc_list of the file src/H5FL.c. The manipulation leads to use after free. Attacking locally is a requirement. The exploit has been disclosed to …
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High 8.8
TOTOLINK A702R HTTP POST Request formWlSiteSurvey buffer overflow
A vulnerability classified as critical was found in TOTOLINK A702R up to 4.0.0-B20230721.1521. Affected by this vulnerability is an unknown functionality of the file /boafrm/formWlSiteSurvey of the component HTTP POST Request Handler. The manipulation of the …
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High 8.8
TOTOLINK X15 HTTP POST Request formParentControl buffer overflow
A vulnerability classified as critical has been found in TOTOLINK X15 up to 1.0.0-B20230714.1105. Affected is an unknown function of the file /boafrm/formParentControl of the component HTTP POST Request Handler. The manipulation of the argument submit-url lea…
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Low 3.3
HDF5 H5Ochunk.c H5O__chunk_protect heap-based overflow
A vulnerability, which was classified as problematic, was found in HDF5 1.14.6. Affected is the function H5O__chunk_protect of the file /src/H5Ochunk.c. The manipulation leads to heap-based buffer overflow. An attack has to be approached locally. The exploit …
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Low 3.3
HDF5 H5Ofsinfo.c H5O__fsinfo_encode heap-based overflow
A vulnerability classified as problematic was found in HDF5 1.14.6. This vulnerability affects the function H5O__fsinfo_encode of the file /src/H5Ofsinfo.c. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack on the local…
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High 8.8
Linksys WRT1900ACS/EA7200/EA7450/EA7500 IGD Layer3Forwarding SetDefaultConnectionService stack-based overflow
A vulnerability has been found in Linksys WRT1900ACS, EA7200, EA7450 and EA7500 up to 20250619 and classified as critical. This vulnerability affects the function SetDefaultConnectionService of the file /upnp/control/Layer3Forwarding of the component IGD. The…
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High 8.8
Linksys E8450 HTTP POST Request portal.cgi set_device_language buffer overflow
A vulnerability, which was classified as critical, was found in Linksys E8450 up to 1.2.00.360516. This affects the function set_device_language of the file portal.cgi of the component HTTP POST Request Handler. The manipulation of the argument dut_language l…
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Low 3.3
HDF5 H5Omtime.c H5O__mtime_new_encode heap-based overflow
A vulnerability, which was classified as problematic, has been found in HDF5 1.14.6. Affected by this issue is the function H5O__mtime_new_encode of the file src/H5Omtime.c. The manipulation leads to heap-based buffer overflow. Attacking locally is a requirem…
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High 8.8
UTT HiPER 840G API formP2PLimitConfig sub_484E40 buffer overflow
A vulnerability was found in UTT HiPER 840G up to 3.1.1-190328. It has been rated as critical. This issue affects the function sub_484E40 of the file /goform/formP2PLimitConfig of the component API. The manipulation of the argument except leads to buffer over…
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High 8.8
UTT HiPER 840G API formConfigDnsFilterGlobal sub_416928 buffer overflow
A vulnerability was found in UTT HiPER 840G up to 3.1.1-190328. It has been declared as critical. This vulnerability affects the function sub_416928 of the file /goform/formConfigDnsFilterGlobal of the component API. The manipulation of the argument GroupName…
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High 8.8
UTT HiPER 840G API setSysAdm strcpy buffer overflow
A vulnerability was found in UTT HiPER 840G up to 3.1.1-190328. 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 p…
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High 7.8
RT-Thread device.c sys_device_write memory corruption
A vulnerability, which was classified as critical, was found in RT-Thread up to 5.1.0. This affects the function sys_device_open/sys_device_read/sys_device_control/sys_device_init/sys_device_close/sys_device_write of the file components/drivers/core/device.c.…
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High 8.8
TOTOLINK A702R HTTP POST Request formIpv6Setup buffer overflow
A vulnerability has been found in TOTOLINK A702R 4.0.0-B20230721.1521 and classified as critical. This vulnerability affects unknown code of the file /boafrm/formIpv6Setup of the component HTTP POST Request Handler. The manipulation of the argument submit-url…
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High 8.8
D-Link DIR-619L formAdvanceSetup stack-based overflow
A vulnerability was found in D-Link DIR-619L 2.06B01 and classified as critical. This issue affects the function formAdvanceSetup of the file /goform/formAdvanceSetup. The manipulation of the argument webpage leads to stack-based buffer overflow. The attack m…
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High 8.8
D-Link DIR-619L formSetWAN_Wizard51 stack-based overflow
A vulnerability has been found in D-Link DIR-619L 2.06B01 and classified as critical. This vulnerability affects the function formSetWAN_Wizard51 of the file /goform/formSetWAN_Wizard51. The manipulation of the argument curTime leads to stack-based buffer ove…
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High 8.8
D-Link DIR-619L formAutoDetecWAN_wizard4 stack-based overflow
A vulnerability, which was classified as critical, was found in D-Link DIR-619L 2.06B01. This affects the function formAutoDetecWAN_wizard4 of the file /goform/formAutoDetecWAN_wizard4. The manipulation of the argument curTime leads to stack-based buffer over…
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High 8.8
D-Link DIR-619L formSetWANType_Wizard5 stack-based overflow
A vulnerability, which was classified as critical, has been found in D-Link DIR-619L 2.06B01. Affected by this issue is the function formSetWANType_Wizard5 of the file /goform/formSetWANType_Wizard5. The manipulation of the argument curTime leads to stack-bas…
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Critical 9.2
Memory overflow vulnerability leading to unintended control flow and Denial of Service
Memory overflow vulnerability leading to unintended control flow and Denial of Service in NetScaler ADC and NetScaler Gateway when configured as Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server
KEV Jun 30, 2025 -
High 8.8
TOTOLINK EX1200T HTTP POST Request formIpv6Setup buffer overflow
A vulnerability classified as critical has been found in TOTOLINK EX1200T 4.1.2cu.5232_B20210713. Affected is an unknown function of the file /boafrm/formIpv6Setup of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads t…
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Medium 5.3
oatpp Oat++ Deserializer.cpp deserializeArray stack-based overflow
A vulnerability was found in oatpp Oat++ up to 1.3.1. It has been declared as critical. This vulnerability affects the function deserializeArray of the file src/oatpp/json/Deserializer.cpp. The manipulation leads to stack-based buffer overflow. The attack can…
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High 8.8
Netgear WNCE3001 HTTP POST Request http_d stack-based overflow
A vulnerability was found in Netgear WNCE3001 1.0.0.50. It has been classified as critical. This affects the function http_d of the component HTTP POST Request Handler. The manipulation of the argument Host leads to stack-based buffer overflow. It is possible…
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High 8.1
Memory safety bugs fixed in Firefox 140 and Thunderbird 140
Memory safety bugs present in Firefox 139 and Thunderbird 139. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefo…
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High 8.6
llama.cpp tokenizer signed vs. unsigned heap overflow
llama.cpp is an inference of several LLM models in C/C++. Prior to version b5721, there is a signed vs. unsigned integer overflow in llama.cpp's tokenizer implementation (llama_vocab::tokenize) (src/llama-vocab.cpp:3036) resulting in unintended behavior in to…
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Medium 5.3
HDF5 H5Fint.c H5F_addr_decode_len heap-based overflow
A vulnerability has been found in HDF5 up to 1.14.6 and classified as critical. This vulnerability affects the function H5F_addr_decode_len of the file /hdf5/src/H5Fint.c. The manipulation leads to heap-based buffer overflow. An attack has to be approached lo…
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High 8.8
Netgear EX6150 sub_410090 stack-based overflow
A vulnerability classified as critical has been found in Netgear EX6150 1.0.0.46_1.0.76. This affects the function sub_410090. The manipulation leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclose…
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High 8.8
Netgear EX6100 sub_415EF8 stack-based overflow
A vulnerability was found in Netgear EX6100 1.0.2.28_1.1.138. It has been rated as critical. Affected by this issue is the function sub_415EF8. The manipulation leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been di…
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Low 3.3
vstakhov libucl ucl_parser.c ucl_parse_multiline_string heap-based overflow
A vulnerability classified as problematic was found in vstakhov libucl up to 0.9.2. Affected by this vulnerability is the function ucl_parse_multiline_string of the file src/ucl_parser.c. The manipulation leads to heap-based buffer overflow. The attack needs …
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Low 3.3
sparklemotion nokogiri hashmap.c hashmap_get_with_hash heap-based overflow
A vulnerability was found in sparklemotion nokogiri c29c920907366cb74af13b4dc2230e9c9e23b833. It has been classified as problematic. This affects the function hashmap_get_with_hash of the file gumbo-parser/src/hashmap.c. The manipulation leads to heap-based b…
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Low 3.3
sparklemotion nokogiri hashmap.c hashmap_set_with_hash heap-based overflow
A vulnerability was found in sparklemotion nokogiri c29c920907366cb74af13b4dc2230e9c9e23b833 and classified as problematic. This issue affects the function hashmap_set_with_hash of the file gumbo-parser/src/hashmap.c. The manipulation leads to heap-based buff…
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High 8.8
TOTOLINK A3002R formRoute stack-based overflow
A vulnerability was found in TOTOLINK A3002R 1.1.1-B20200824.0128. It has been rated as critical. This issue affects the function formRoute of the file /boafrm/formRoute. The manipulation of the argument subnet leads to stack-based buffer overflow. The attack…
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High 8.8
TOTOLINK A3002R formWlanMultipleAP stack-based overflow
A vulnerability was found in TOTOLINK A3002R 1.1.1-B20200824.0128. It has been declared as critical. This vulnerability affects the function formWlanMultipleAP of the file /boafrm/formWlanMultipleAP. The manipulation of the argument submit-url leads to stack-…
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High 8.8
TOTOLINK X15 HTTP POST Request formIpv6Setup buffer overflow
A vulnerability was found in TOTOLINK X15 1.0.0-B20230714.1105. It has been declared as critical. This vulnerability affects unknown code of the file /boafrm/formIpv6Setup of the component HTTP POST Request Handler. The manipulation of the argument submit-url…
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High 8.8
TOTOLINK N300RH HTTP POST Message formPortFw buffer overflow
A vulnerability was found in TOTOLINK N300RH 6.1c.1390_B20191101 and classified as critical. Affected by this issue is some unknown functionality of the file /boafrm/formPortFw of the component HTTP POST Message Handler. The manipulation of the argument servi…
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High 8.8
TOTOLINK X15 HTTP POST Request formIPv6Addr buffer overflow
A vulnerability, which was classified as critical, was found in TOTOLINK X15 1.0.0-B20230714.1105. Affected is an unknown function of the file /boafrm/formIPv6Addr of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads t…
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High 8.8
TOTOLINK A702R/A3002R/A3002RU/EX1200T HTTP POST Request formIPv6Addr buffer overflow
A vulnerability was found in TOTOLINK A702R, A3002R, A3002RU and EX1200T 3.0.0-B20230809.1615/4.0.0-B20230531.1404/4.0.0-B20230721.1521/4.1.2cu.5232_B20210713. It has been classified as critical. Affected is an unknown function of the file /boafrm/formIPv6Add…
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High 8.8
D-Link DIR-619L formSetACLFilter stack-based overflow
A vulnerability was found in D-Link DIR-619L 2.06B01 and classified as critical. This issue affects the function formSetACLFilter of the file /goform/formSetACLFilter. The manipulation of the argument curTime leads to stack-based buffer overflow. The attack m…
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High 8.8
D-Link DIR-619L formWlSiteSurvey formSetWizard1 stack-based overflow
A vulnerability has been found in D-Link DIR-619L 2.06B01 and classified as critical. This vulnerability affects the function formSetWizard1 of the file /goform/formWlSiteSurvey. The manipulation of the argument curTime leads to stack-based buffer overflow. T…
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High 8.8
D-Link DIR-619L formSetWizard1 stack-based overflow
A vulnerability, which was classified as critical, was found in D-Link DIR-619L 2.06B01. This affects the function formSetWizard1 of the file /goform/formSetWizard1. The manipulation of the argument curTime leads to stack-based buffer overflow. It is possible…
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High 8.8
D-Link DIR-619L formSetEnableWizard stack-based overflow
A vulnerability, which was classified as critical, has been found in D-Link DIR-619L 2.06B01. Affected by this issue is the function formSetEnableWizard of the file /goform/formSetEnableWizard. The manipulation of the argument curTime leads to stack-based buf…