Weakness (CWE)
CWE-787: Out-of-bounds Write
The product writes data past the end, or before the beginning, of the intended buffer.
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-787
6,159 results · Feed
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Critical 9.8
TiEmu 2.08 Stack-Based Buffer Overflow Vulnerability
TiEmu 2.08 and prior contains a stack-based buffer overflow vulnerability that allows attackers to execute arbitrary code by exploiting inadequate boundary checks on user-supplied input. Attackers can trigger the overflow through command-line arguments passed…
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High 8.4
EKG Gadu 1.9 Local Buffer Overflow via Username Parameter
EKG Gadu 1.9~pre+r2855-3+b1 contains a local buffer overflow vulnerability in the username handling that allows local attackers to execute arbitrary code by supplying an oversized username string. Attackers can trigger the overflow in the strlcpy function by …
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High 8.4
zFTP Client 20061220+dfsg3-4.1 Local Buffer Overflow
zFTP Client 20061220+dfsg3-4.1 contains a buffer overflow vulnerability in the NAME parameter handling of FTP connections that allows local attackers to crash the application or execute arbitrary code. Attackers can supply an oversized NAME value exceeding th…
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High 8.4
HNB Organizer 1.9.18-10 Local Buffer Overflow via -rc Parameter
HNB Organizer 1.9.18-10 contains a local buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying an oversized argument to the -rc command-line parameter. Attackers can craft a malicious input string exceeding 108 bytes…
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High 8.4
PInfo 0.6.9-5.1 Local Buffer Overflow via -m Parameter
PInfo 0.6.9-5.1 contains a local buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying an oversized argument to the -m parameter. Attackers can craft a malicious input string with 564 bytes of padding followed by a r…
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High 8.4
NRSS RSS Reader 0.3.9-1 Stack Buffer Overflow
NRSS RSS Reader 0.3.9-1 contains a stack buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying an oversized argument to the -F parameter. Attackers can craft a malicious input with 256 bytes of padding followed by a …
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High 8.4
TRN 3.6-23 Stack Buffer Overflow Local Code Execution
TRN 3.6-23 contains a stack buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying an oversized argument to the application. Attackers can craft a malicious command-line argument with 156 bytes of padding followed by …
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High 8.4
Multi Emulator Super System 0.154-3.1 Buffer Overflow
Multi Emulator Super System 0.154-3.1 contains a buffer overflow vulnerability in the gamma parameter handling that allows local attackers to crash the application or execute arbitrary code. Attackers can supply an oversized gamma parameter value to overflow …
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High 8.4
yTree 1.94-1.1 Stack-Based Buffer Overflow
yTree 1.94-1.1 contains a stack-based buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying an excessively long argument to the application. Attackers can craft a malicious command-line argument containing shellcode …
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High 8.4
xwpe 1.5.30a-2.1 Stack-based Buffer Overflow
xwpe 1.5.30a-2.1 and prior contains a stack-based buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying overly long input strings that exceed buffer boundaries. Attackers can craft malicious command-line arguments wi…
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Medium 5.3
MapServer has heap buffer overflow in SLD `Categorize` Threshold parsing
MapServer is a system for developing web-based GIS applications. Starting in version 4.2 and prior to version 8.6.1, a heap-buffer-overflow write in MapServer’s SLD (Styled Layer Descriptor) parser lets a remote, unauthenticated attacker crash the MapServer p…
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Medium 5.1
ImageMagick has an Out-of-bounds Write via InterpretImageFilename
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to 7.1.2-18 and 6.9.13-43, due to an incorrect return value on certain platforms a pointer is incremented past the end of a buffer that is on the stack and th…
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Medium 4.0
ImageMagick has an Out-of-Bounds write of a zero byte in its X11 display interaction
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to 7.1.2-18 and 6.9.13-43, an out-of-bounds write of a zero byte exists in the X11 `display` interaction path that could lead to a crash. Versions 7.1.2-18 an…
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High 7.8
Zen-C has Stack-Based Buffer Overflow in Identifier Mangling
Zen C is a systems programming language that compiles to human-readable GNU C/C11. Prior to version 0.4.4, a stack-based buffer overflow vulnerability in the Zen C compiler allows attackers to cause a compiler crash or potentially execute arbitrary code by pr…
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High 7.6
LIBPNG has ARM NEON Palette Expansion Out-of-Bounds Read on AArch64
LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. In versions 1.6.36 through 1.6.55, an out-of-bounds read and write exists in libpng's ARM/AArch64 Neon-optimized palett…
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Medium 5.5
EVerest's ISO15118 update_energy_transfer_modes overflow can corrupt EVSE state
EVerest is an EV charging software stack. Prior to versions to 2026.02.0, ISO15118_chargerImpl::handle_update_energy_transfer_modes copies a variable-length list into a fixed-size array of length 6 without bounds checking. With schema validation disabled by d…
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Medium 5.5
EVerest: ISO15118 session_setup payment options overflow can corrupt EVSE state
EVerest is an EV charging software stack. Prior to versions to 2026.02.0, ISO15118_chargerImpl::handle_session_setup copies a variable-length payment_options list into a fixed-size array of length 2 without bounds checking. With schema validation disabled by …
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High 7.5
A vulnerability has been identified in CPCI85 Central Processing/Communication (All versions < V26.10), SICORE Base sys…
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Medium 5.5
River Past Audio Converter 7.7.16 Local Buffer Overflow DoS
River Past Audio Converter 7.7.16 contains a local buffer overflow vulnerability in the activation code field that allows local attackers to crash the application by supplying an oversized input string. Attackers can paste a large payload of repeated characte…
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High 8.4
River Past CamDo 3.7.6 Structured Exception Handler Buffer Overflow
River Past CamDo 3.7.6 contains a structured exception handler (SEH) buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying a malicious string in the Lame_enc.dll name field. Attackers can craft a payload with a 280-b…
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Medium 6.2
MyVideoConverter Pro 3.14 Denial of Service Buffer Overflow
MyVideoConverter Pro 3.14 contains a local buffer overflow vulnerability that allows attackers to crash the application by supplying an excessively long string to the registration code input field. Attackers can paste a malicious payload containing 10000 byte…
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High 8.4
PassFab Excel Password Recovery 8.3.1 SEH Buffer Overflow
PassFab Excel Password Recovery 8.3.1 contains a structured exception handling buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying a malicious payload in the registration code field. Attackers can craft a buffer ov…
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High 8.4
PassFab RAR Password Recovery 9.3.2 SEH Buffer Overflow
PassFab RAR Password Recovery 9.3.2 contains a structured exception handler (SEH) buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying a malicious payload. Attackers can craft a payload with a buffer overflow, NSEH …
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High 8.4
PDF Explorer 1.5.66.2 Structured Exception Handler Local Code Execution
PDF Explorer 1.5.66.2 contains a structured exception handler (SEH) overflow vulnerability that allows local attackers to execute arbitrary code by overwriting SEH records with malicious data. Attackers can craft a payload with buffer overflow, NSEH jump, and…
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Medium 6.2
AnyBurn 4.3 Denial of Service Local Buffer Overflow
AnyBurn 4.3 contains a local buffer overflow vulnerability that allows local attackers to crash the application by supplying an excessively long string in the image file name field. Attackers can paste a 10000-byte payload into the 'Image file name' parameter…
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Medium 6.2
MegaPing Local Buffer Overflow Denial of Service
MegaPing contains a local buffer overflow vulnerability that allows local attackers to crash the application by supplying an oversized payload to the Destination Address List field in the Finger function. Attackers can paste a crafted buffer exceeding expecte…
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Medium 5.5
Excel Password Recovery Professional 8.2.0.0 Local Buffer Overflow DoS
Excel Password Recovery Professional 8.2.0.0 contains a local buffer overflow vulnerability that allows attackers to cause a denial of service by supplying an excessively long string to the 'E-Mail and Registrations Code' field. Attackers can paste a crafted …
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High 8.4
Nsauditor 3.0.28.0 Local SEH Buffer Overflow
Nsauditor 3.0.28.0 contains a structured exception handling buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying malicious input to the DNS Lookup tool. Attackers can craft a payload with SEH chain overwrite and inj…
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High 8.4
Boxoft wav-wma Converter 1.0 Local Buffer Overflow SEH
Boxoft wav-wma Converter 1.0 contains a local buffer overflow vulnerability in structured exception handling that allows attackers to execute arbitrary code by crafting malicious WAV files. Attackers can create a specially crafted WAV file with excessive data…
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High 7.8
Allok Video Splitter 3.1.1217 Buffer Overflow via License Name
Allok Video Splitter 3.1.1217 contains a buffer overflow vulnerability that allows local attackers to cause a denial of service or execute arbitrary code by supplying an oversized string in the License Name field. Attackers can craft a malicious payload excee…
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High 8.0
Saloon has a Fixture Name Path Traversal Vulnerability
Saloon is a PHP library that gives users tools to build API integrations and SDKs. Prior to version 4.0.0, fixture names were used to build file paths under the configured fixture directory without validation. A name containing path segments (e.g. ../traversa…
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High 7.1
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.5, …
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Medium 4.3
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.4, iOS 26.4 and iPadOS 26.4, ma…
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Medium 4.3
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.4, iOS 26.4 and iPadOS 26.4, ma…
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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 6.5
The issue was addressed with improved memory handling. This issue is fixed in Safari 26.4, iOS 26.4 and iPadOS 26.4, ma…
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High 7.5
Incorrect boundary conditions in the Layout: Text and Fonts component
Incorrect boundary conditions in the Layout: Text and Fonts component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
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High 7.5
Incorrect boundary conditions in the Audio/Video: Web Codecs component
Incorrect boundary conditions in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
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High 7.5
Incorrect boundary conditions in the Graphics: Canvas2D component
Incorrect boundary conditions in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
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High 7.5
Incorrect boundary conditions in the Graphics: Canvas2D component
Incorrect boundary conditions in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.