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
376 results · Clear filters · Feed
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Critical 9.9
TRENDnet TEW-755AP ssi wan.cgi stack-based overflow
A vulnerability was identified in TRENDnet TEW-755AP up to 20260702. Affected by this issue is some unknown functionality of the file /cgi-bin/wan.cgi of the component ssi. Such manipulation of the argument cameo.wan.wan_pppoe_password_00 leads to stack-based…
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Critical 9.9
TRENDnet TEW-755AP mycli FUN_401000 stack-based overflow
A vulnerability was found in TRENDnet TEW-755AP up to 20260702. Affected is the function FUN_401000 of the file /sbin/mycli. The manipulation of the argument ssid results in stack-based buffer overflow. The attack may be launched remotely. The exploit has bee…
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Critical 9.9
TRENDnet TV-IP751WIC alphapd set_time.cgi stack-based overflow
A security flaw has been discovered in TRENDnet TV-IP751WIC 11.03.03. Affected by this issue is some unknown functionality of the file /cgi-bin/admin/set_time.cgi of the component alphapd. The manipulation of the argument Currenttime results in stack-based bu…
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Critical 9.8
RDK WebUI heap-based buffer overflow vulnerability
Heap-based buffer overflow in the multipart form-data parser in `jst_post.c` in RDK-B WebUI `rdkb-2025q4-kirkstone.04.10.26` allows a remote unauthenticated attacker to cause memory corruption and denial of service, and potentially execute arbitrary code, via…
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Critical 10.0
Comfast CF-N1-S URI Parameter Parsing mbox-config get_para_from_uri stack-based overflow
A flaw has been found in Comfast CF-N1-S 2.6.0.1. This affects the function get_para_from_uri of the file /cgi-bin/mbox-config of the component URI Parameter Parsing. This manipulation of the argument width/height causes stack-based buffer overflow. The attac…
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Critical 9.9
UTT HiPER 1250GW HTTP aspApBasicConfigUrcp strcpy stack-based overflow
A security vulnerability has been detected in UTT HiPER 1250GW up to 3.2.7-210907-180535. Affected by this vulnerability is the function strcpy of the file /goform/aspApBasicConfigUrcp of the component HTTP Handler. The manipulation of the argument pvid leads…
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Critical 9.9
UTT HiPER 1200GW formGroupConfig strcpy stack-based overflow
A weakness has been identified in UTT HiPER 1200GW up to 2.5.3-170306. Affected is the function strcpy of the file /goform/formGroupConfig. Executing a manipulation of the argument timestart can lead to stack-based buffer overflow. The attack may be performed…
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Critical 9.9
TRENDnet TEW-823DRU NVRAM wan.cgi strcpy stack-based overflow
A weakness has been identified in TRENDnet TEW-823DRU 1.1.02b01. Impacted is the function strcpy of the file /cgi-bin/wan.cgi of the component NVRAM. This manipulation of the argument wan_l2tp_password causes stack-based buffer overflow. The attack can be ini…
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Critical 9.9
TRENDnet TV-IP751WIC alphapd FUN_0043372C stack-based overflow
A flaw has been found in TRENDnet TV-IP751WIC 11.03.03. This vulnerability affects the function SystemNetworkChanged/SystemDDNSChanged/SystemEmailChanged/SystemFTPChanged/websCheckRealm/FUN_00432574/FUN_0043372C of the component alphapd. Executing a manipulat…
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Critical 10.0
TRENDnet TEW-WLC100 HTTP Header nginx FUN_0040da4c stack-based overflow
A vulnerability was detected in TRENDnet TEW-WLC100 1v2.07b01. Affected by this issue is the function FUN_0040da4c of the file /usr/nginx/sbin/nginx of the component HTTP Header Handler. The manipulation of the argument Server results in stack-based buffer ov…
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Critical 9.6
TRENDnet TEW-WLC100P DHCP blobmsg netifd stack-based overflow
A security vulnerability has been detected in TRENDnet TEW-WLC100P 12.07b01. Affected by this vulnerability is an unknown functionality of the file /sbin/netifd of the component DHCP blobmsg Handler. The manipulation leads to stack-based buffer overflow. The …
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Critical 9.8
Internally found bugs fixed in Firefox 154
Internally found bugs present in Firefox 153. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited. This vulnerability was fixed in Firefox 1…
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Critical 9.8
Internally found bugs fixed in Firefox ESR 153.1 and Firefox 154
Internally found bugs present in Firefox ESR 153.0 and Firefox 153. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited. This vulnerability …
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Critical 9.8
Internally found bugs fixed in Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1 and Firefox 154
Internally found bugs present in Firefox ESR 115.38, Firefox ESR 140.13, Firefox ESR 153.0 and Firefox 153. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could …
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Critical 9.8
Internally found bugs fixed in Firefox ESR 140.14, Firefox ESR 153.1 and Firefox 154
Internally found bugs present in Firefox ESR 140.13, Firefox ESR 153.0 and Firefox 153. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited.…
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Critical 10.0
Wavlink WN531P3/WN535M1 Export Pingortrace CGI export_pingortrace.cgi strcpy stack-based overflow
A vulnerability was determined in Wavlink WN531P3 and WN535M1 V250922. Affected by this vulnerability is the function strcpy of the file /etc/lighttpd/www/cgi-bin/export_pingortrace.cgi of the component Export Pingortrace CGI. Executing a manipulation of the …
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Critical 9.9
Edimax EW-7478APC formWlSiteSurvey buffer overflow
A vulnerability was detected in Edimax EW-7478APC 1.04. Affected is the function formWlSiteSurvey of the file /goform/formWlSiteSurvey. Performing a manipulation of the argument selSSID results in buffer overflow. The attack is possible to be carried out remo…
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Critical 9.9
Edimax EW-7478APC formWanTcpipSetup stack-based overflow
A weakness has been identified in Edimax EW-7478APC 1.04. This affects the function formWanTcpipSetup of the file /goform/formWanTcpipSetup. This manipulation of the argument pppUserName causes stack-based buffer overflow. Remote exploitation of the attack is…
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Critical 9.8
Wavlink WL-NU516U1 nas.cgi change_password stack-based overflow
A vulnerability was found in Wavlink WL-NU516U1 708c073-mt7628. This impacts the function change_password of the file nas.cgi. The manipulation of the argument User1Passwd results in stack-based buffer overflow. The attack can be executed remotely. The exploi…
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Critical 9.8
Wavlink WL-NU516U1 nas.cgi fgets stack-based overflow
A vulnerability has been found in Wavlink WL-NU516U1 708c073-mt7628. This affects the function fgets of the file nas.cgi. The manipulation of the argument CONTENT_LENGTH leads to stack-based buffer overflow. Remote exploitation of the attack is possible. You …
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Critical 9.8
The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8…
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Critical 9.8
The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8…
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Critical 9.8
The issue was addressed with improved memory handling. This issue is fixed in macOS Sonoma 14.8.8, macOS Tahoe 26.6. A …
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Critical 9.8
The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8…
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Critical 9.8
The issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 …
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Critical 9.8
A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, i…
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Critical 9.8
The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8…
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Critical 9.8
The issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, macOS Seq…
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Critical 9.8CVE-2026-43682 Public exploit
The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8…
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Critical 9.8
The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8…
-
Critical 9.8
The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8…
-
Critical 9.8
The issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 …
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Critical 9.8
Memory safety bugs fixed in Thunderbird ESR 140.13
Memory safety bugs present in Thunderbird ESR 140.12. 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 Firefox ESR 115…
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Critical 9.8
Memory safety bugs fixed in Thunderbird ESR 140.13 and Thunderbird 153
Memory safety bugs present in Thunderbird ESR 140.12 and Thunderbird 152. 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 fixe…
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Critical 9.8
Memory safety bugs fixed in Thunderbird ESR 140.13 and Thunderbird 153
Memory safety bugs present in Thunderbird ESR 140.12 and Thunderbird 152. 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 fixe…
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Critical 9.8
Memory safety bugs fixed in Thunderbird 153
Memory safety bugs present in Thunderbird 152. 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 Firefox 153 and Thunde…
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Critical 9.1
Incorrect boundary conditions in the Audio/Video: GMP component
Incorrect boundary conditions in the Audio/Video: GMP component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
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Critical 9.1
Incorrect boundary conditions in the Graphics: WebGPU component
Incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
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Critical 9.8
Incorrect boundary conditions in the Graphics component
Incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
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Critical 10.0
Sandbox escape due to invalid pointer in the Disability Access APIs component
Sandbox escape due to invalid pointer in the Disability Access APIs component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.