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
3,721 results · Feed
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Medium 5.3
Axiomatic Bento4 DSI v1 Ap4Dac4Atom.cpp SkipBits heap-based overflow
A vulnerability was identified in Axiomatic Bento4 up to 1.6.0-641. Affected is the function AP4_BitReader::SkipBits of the file Ap4Dac4Atom.cpp of the component DSI v1 Parser. Such manipulation of the argument n_presentations leads to heap-based buffer overf…
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Medium 5.3
Axiomatic Bento4 MP4 File Ap4Dac4Atom.cpp ReadCache heap-based overflow
A vulnerability was determined in Axiomatic Bento4 up to 1.6.0-641. This impacts the function AP4_BitReader::ReadCache of the file Ap4Dac4Atom.cpp of the component MP4 File Parser. This manipulation causes heap-based buffer overflow. The attack needs to be la…
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High 8.8
D-Link DNS-1550-04 account_mgr.cgi cgi_addgroup_get_group_quota_minsize stack-based overflow
A vulnerability was found in D-Link DNS-120, DNR-202L, DNS-315L, DNS-320, DNS-320L, DNS-320LW, DNS-321, DNR-322L, DNS-323, DNS-325, DNS-326, DNS-327L, DNR-326, DNS-340L, DNS-343, DNS-345, DNS-726-4, DNS-1100-4, DNS-1200-05 and DNS-1550-04 up to 20260205. Impa…
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High 8.8
D-Link DNS-1550-04 account_mgr.cgi cgi_adduser_to_session stack-based overflow
A vulnerability was determined in D-Link DNS-120, DNR-202L, DNS-315L, DNS-320, DNS-320L, DNS-320LW, DNS-321, DNR-322L, DNS-323, DNS-325, DNS-326, DNS-327L, DNR-326, DNS-340L, DNS-343, DNS-345, DNS-726-4, DNS-1100-4, DNS-1200-05 and DNS-1550-04 up to 20260205.…
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High 8.8
D-Link DNS-1550-04 webdav_mgr.cgi Webdav_Upload_File stack-based overflow
A vulnerability has been found in D-Link DNS-120, DNR-202L, DNS-315L, DNS-320, DNS-320L, DNS-320LW, DNS-321, DNR-322L, DNS-323, DNS-325, DNS-326, DNS-327L, DNR-326, DNS-340L, DNS-343, DNS-345, DNS-726-4, DNS-1100-4, DNS-1200-05 and DNS-1550-04 up to 20260205.…
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High 8.8
D-Link DNS-1550-04 app_mgr.cgi UPnP_AV_Server_Path_Del stack-based overflow
A flaw has been found in D-Link DNS-120, DNR-202L, DNS-315L, DNS-320, DNS-320L, DNS-320LW, DNS-321, DNR-322L, DNS-323, DNS-325, DNS-326, DNS-327L, DNR-326, DNS-340L, DNS-343, DNS-345, DNS-726-4, DNS-1100-4, DNS-1200-05 and DNS-1550-04 up to 20260205. This vul…
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High 8.8
Tenda CH22 Parameter webtypelibrary formWebTypeLibrary stack-based overflow
A vulnerability was determined in Tenda CH22 1.0.0.1. Affected is the function formWebTypeLibrary of the file /goform/webtypelibrary of the component Parameter Handler. This manipulation of the argument webSiteId causes stack-based buffer overflow. The attack…
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Medium 5.3
Nothings stb Multi-frame GIF File stb_image.h stbi__load_gif_main double free
A weakness has been identified in Nothings stb up to 2.30. This impacts the function stbi__load_gif_main of the file stb_image.h of the component Multi-frame GIF File Handler. This manipulation causes double free. The attack requires local access. The exploit…
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Medium 5.3
Nothings stb_image Multi-frame GIF File stb_image.h stbi__gif_load_next heap-based overflow
A security flaw has been discovered in Nothings stb_image up to 2.30. This affects the function stbi__gif_load_next of the file stb_image.h of the component Multi-frame GIF File Handler. The manipulation results in heap-based buffer overflow. The attack requi…
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High 8.8
Tenda CH22 Parameter QuickIndex formQuickIndex stack-based overflow
A vulnerability was determined in Tenda CH22 1.0.0.1. This impacts the function formQuickIndex of the file /goform/QuickIndex of the component Parameter Handler. This manipulation of the argument mit_linktype causes stack-based buffer overflow. The attack is …
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High 8.8
Tenda CH22 Parameter AdvSetWan fromAdvSetWan stack-based overflow
A vulnerability was found in Tenda CH22 1.0.0.1. This affects the function fromAdvSetWan of the file /goform/AdvSetWan of the component Parameter Handler. The manipulation of the argument wanmode results in stack-based buffer overflow. The attack can be execu…
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High 8.8
Tenda CH22 Parameter setcfm fromSetCfm stack-based overflow
A vulnerability has been found in Tenda CH22 1.0.0.1/1.If. The impacted element is the function fromSetCfm of the file /goform/setcfm of the component Parameter Handler. The manipulation of the argument funcname leads to stack-based buffer overflow. Remote ex…
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High 8.8
Tenda CH22 createFileName formCreateFileName stack-based overflow
A vulnerability was detected in Tenda CH22 1.0.0.1. Impacted is the function formCreateFileName of the file /goform/createFileName. Performing a manipulation of the argument fileNameMit results in stack-based buffer overflow. The attack may be initiated remot…
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High 8.8
Tenda FH1201 Parameter WrlExtraSet formWrlExtraSet stack-based overflow
A flaw has been found in Tenda FH1201 1.2.0.14(408). Affected is the function formWrlExtraSet of the file /goform/WrlExtraSet of the component Parameter Handler. Executing a manipulation of the argument GO can lead to stack-based buffer overflow. The attack m…
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High 8.8
Tenda FH1201 Parameter WrlclientSet stack-based overflow
A vulnerability was detected in Tenda FH1201 1.2.0.14(408). This impacts the function WrlclientSet of the file /goform/WrlclientSet of the component Parameter Handler. Performing a manipulation of the argument GO results in stack-based buffer overflow. The at…
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High 8.8
Belkin F9K1122 Setting formSetSystemSettings stack-based overflow
A security vulnerability has been detected in Belkin F9K1122 1.00.33. This affects the function formSetSystemSettings of the file /goform/formSetSystemSettings of the component Setting Handler. Such manipulation of the argument webpage leads to stack-based bu…
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High 8.8
Belkin F9K1122 Parameter formSetPassword stack-based overflow
A weakness has been identified in Belkin F9K1122 1.00.33. The impacted element is the function formSetPassword of the file /goform/formSetPassword of the component Parameter Handler. This manipulation of the argument webpage causes stack-based buffer overflow…
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High 8.8
Belkin F9K1122 Parameter formCrossBandSwitch stack-based overflow
A security flaw has been discovered in Belkin F9K1122 1.00.33. The affected element is the function formCrossBandSwitch of the file /goform/formCrossBandSwitch of the component Parameter Handler. The manipulation of the argument webpage results in stack-based…
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Low 3.3
mxml mxmlIndexNew mxml-index.c index_sort stack-based overflow
A vulnerability was determined in mxml up to 4.0.4. This issue affects the function index_sort of the file mxml-index.c of the component mxmlIndexNew. Executing a manipulation of the argument tempr can lead to stack-based buffer overflow. The attack is restri…
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High 8.8
Tenda 4G06 Endpoint DhcpListClient fromDhcpListClient stack-based overflow
A vulnerability was found in Tenda 4G06 04.06.01.29. This vulnerability affects the function fromDhcpListClient of the file /goform/DhcpListClient of the component Endpoint. Performing a manipulation of the argument page results in stack-based buffer overflow…
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High 8.8
D-Link DIR-513 formSetEmail stack-based overflow
A vulnerability was found in D-Link DIR-513 1.10. This issue affects the function formSetEmail of the file /goform/formSetEmail. Performing a manipulation of the argument curTime results in stack-based buffer overflow. The attack is possible to be carried out…
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High 8.8
Tenda F453 httpd PPTPUserSetting fromPPTPUserSetting stack-based overflow
A flaw has been found in Tenda F453 1.0.0.3. This affects the function fromPPTPUserSetting of the file /goform/PPTPUserSetting of the component httpd. This manipulation of the argument delno causes stack-based buffer overflow. Remote exploitation of the attac…
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High 8.8
Wavlink WL-WN579X3-C UPNP firewall.cgi sub_4019FC stack-based overflow
A vulnerability was determined in Wavlink WL-WN579X3-C 231124. This impacts the function sub_4019FC of the file /cgi-bin/firewall.cgi of the component UPNP Handler. Executing a manipulation of the argument UpnpEnabled can lead to stack-based buffer overflow. …
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High 8.8
Totolink LR350 cstecgi.cgi setWiFiGuestCfg buffer overflow
A vulnerability was found in Totolink LR350 9.3.5u.6369_B20220309. This vulnerability affects the function setWiFiGuestCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument ssid results in buffer overflow. The attack can be launched remotely.…
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High 8.8
Tenda AC15 POST Request setcfm formSetCfm memory corruption
A vulnerability has been found in Tenda AC15 15.03.05.19. This affects the function formSetCfm of the file /goform/setcfm of the component POST Request Handler. The manipulation of the argument funcpara1 leads to stack-based buffer overflow. The attack can be…
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High 8.8
Tenda AC7 POST Request SetSysTimeCfg fromSetSysTime memory corruption
A flaw has been found in Tenda AC7 15.03.06.44. Affected by this issue is the function fromSetSysTime of the file /goform/SetSysTimeCfg of the component POST Request Handler. Executing a manipulation of the argument Time can lead to stack-based buffer overflo…
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High 8.8CVE-2026-4961 Public exploit
Tenda AC6 POST Request QuickIndex formQuickIndex stack-based overflow
A vulnerability was identified in Tenda AC6 15.03.05.16. Affected by this vulnerability is the function formQuickIndex of the file /goform/QuickIndex of the component POST Request Handler. The manipulation of the argument PPPOEPassword leads to stack-based bu…
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High 8.8
Tenda AC6 POST Request WizardHandle fromWizardHandle stack-based overflow
A vulnerability was determined in Tenda AC6 15.03.05.16. Affected is the function fromWizardHandle of the file /goform/WizardHandle of the component POST Request Handler. Executing a manipulation of the argument WANT/WANS can lead to stack-based buffer overfl…
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High 8.8
Tenda AC5 POST Request WizardHandle decodePwd stack-based overflow
A vulnerability was determined in Tenda AC5 15.03.06.47. The affected element is the function decodePwd of the file /goform/WizardHandle of the component POST Request Handler. Executing a manipulation of the argument WANT/WANS can lead to stack-based buffer o…
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High 8.8
Tenda AC5 POST Request WifiWpsOOB formWifiWpsOOB stack-based overflow
A vulnerability was found in Tenda AC5 15.03.06.47. Impacted is the function formWifiWpsOOB of the file /goform/WifiWpsOOB of the component POST Request Handler. Performing a manipulation of the argument index results in stack-based buffer overflow. Remote ex…
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High 8.8
Tenda AC5 POST Request setcfm formSetCfm stack-based overflow
A vulnerability has been found in Tenda AC5 15.03.06.47. This issue affects the function formSetCfm of the file /goform/setcfm of the component POST Request Handler. Such manipulation of the argument funcpara1 leads to stack-based buffer overflow. The attack …
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High 8.8
Tenda AC5 POST Request QuickIndex formQuickIndex memory corruption
A flaw has been found in Tenda AC5 15.03.06.47. This vulnerability affects the function formQuickIndex of the file /goform/QuickIndex of the component POST Request Handler. This manipulation of the argument PPPOEPassword causes stack-based buffer overflow. Th…
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High 8.8
Tenda AC5 POST Request addressNat fromAddressNat memory corruption
A vulnerability was detected in Tenda AC5 15.03.06.47. This affects the function fromAddressNat of the file /goform/addressNat of the component POST Request Handler. The manipulation of the argument page results in stack-based buffer overflow. The attack can …
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High 8.8
UTT HiPER 1250GW Parameter formConfigDnsFilterGlobal strcpy buffer overflow
A security vulnerability has been detected in UTT HiPER 1250GW up to 3.2.7-210907-180535. This issue affects the function strcpy of the file /goform/formConfigDnsFilterGlobal of the component Parameter Handler. Such manipulation of the argument GroupName lead…
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High 8.8CVE-2026-4861 Public exploit
Wavlink WL-NU516U1 nas.cgi ftext stack-based overflow
A weakness has been identified in Wavlink WL-NU516U1 260227. This vulnerability affects the function ftext of the file /cgi-bin/nas.cgi. This manipulation of the argument Content-Length causes stack-based buffer overflow. The attack can be initiated remotely.…
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Medium 6.5
A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.7 and iPadOS 18.7.…
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Medium 5.5CVE-2026-20698 Public exploit
The issue was addressed with improved memory handling. This issue is fixed in iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.…
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High 7.5
Incorrect boundary conditions in the Graphics: Text component
Incorrect boundary conditions in the Graphics: Text component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
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Critical 9.8
Incorrect boundary conditions in the Audio/Video component
Incorrect boundary conditions in the Audio/Video component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
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High 7.8
Improper Restriction of Operations within the Bounds of a Memory Buffer in linkingvision rapidvms
Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in linkingvision rapidvms.This issue affects rapidvms: before PR#96.