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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High 7.5
Out-of-bounds write in Commander-Genius
Out-of-bounds Write vulnerability in gerstrong Commander-Genius.This issue affects Commander-Genius: before Release refs/pull/358/merge.
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Critical 10.0
Out-of-bounds write in turso3d
Out-of-bounds Write, Divide By Zero, NULL Pointer Dereference, Use of Uninitialized Resource, Out-of-bounds Read, Reachable Assertion vulnerability in cadaver turso3d.This issue affects .
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Critical 10.0
A heap-based buffer over-read or buffer overflow vulnerability in FASTSHIFT/X-TRACK
Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in FASTSHIFT X-TRACK (Software/X-Track/USER/App/Utils/lv_img_png/PNGdec/src modules). This vulnerability is associated with program files inflate.C. This…
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Critical 10.0
a heap-based buffer overflow vulnerability in ttttupup/wxhelper via src/mongoose.
Out-of-bounds Write, Heap-based Buffer Overflow vulnerability in ttttupup wxhelper (src modules). This vulnerability is associated with program files mongoose.C. This issue affects wxhelper: through 3.9.10.19-v1.
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High 8.7
A potential heap-buffer overflow in praydog/UEVR
Out-of-bounds Write vulnerability in praydog UEVR (dependencies/lua/src modules). This vulnerability is associated with program files ldebug.C, lvm.C. This issue affects UEVR: before 1.05.
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Critical 9.3
An improper pointer arithmetic in root-project/root at builtins/zlib/inffast.c
Vulnerability in root-project root (builtins/zlib modules). This vulnerability is associated with program files inffast.C. This issue affects root.
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Medium 6.9
Save stack space while handling errors in praydog/REFramework
An issue from the component luaG_runerror in dependencies/lua/src/ldebug.c in praydog/REFramework version before 1.5.5 leads to a heap-buffer overflow when a recursive error occurs.
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Critical 10.0
A heap-based buffer over-read or buffer overflow in tildearrow/furnace
Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in tildearrow furnace (extern/zlib modules). This vulnerability is associated with program files inflate.C.
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Medium 5.2
A heap-based buffer over-read or buffer overflow in davisking/dlib
Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in davisking dlib (dlib/external/zlib modules). This vulnerability is associated with program files inflate.C. This issue affects dlib: before v19.24.9.
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Medium 6.9
An out of bounds write due to a missing bounds check in neka-nat/cupoch
Out-of-bounds Write vulnerability in neka-nat cupoch (third_party/libjpeg-turbo/libjpeg-turbo modules). This vulnerability is associated with program files tjbench.C. This issue affects cupoch.
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Medium 5.1
An Out-of-bounds Write in CloverHackyColor/CloverBootloader
Out-of-bounds Write vulnerability in CloverHackyColor CloverBootloader (MdeModulePkg/Universal/RegularExpressionDxe/Oniguruma modules). This vulnerability is associated with program files regcomp.C. This issue affects CloverBootloader: before 5162.
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Critical 10.0
A heap-based buffer over-read or buffer overflow vulnerability in azerothcore/azerothcore-wotlk
Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in azerothcore azerothcore-wotlk (deps/zlib modules). This vulnerability is associated with program files inflate.C. This issue affects azerothcore-wotlk…
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High 7.1
Gix-date: gix-date: undefined behavior due to invalid string generation
A flaw was found in gix-date. The `gix_date::parse::TimeBuf::as_str` function can generate strings containing invalid non-UTF8 characters. This issue violates the internal safety invariants of the `TimeBuf` component, leading to undefined behavior when these …
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High 7.8
Out-Of-Bounds Write vulnerability affecting the EPRT file reading procedure in SOLIDWORKS eDrawings from Release SOLIDWORKS Desktop 2025 through Release SOLIDWORKS Desktop 2026
An Out-Of-Bounds Write vulnerability affecting the EPRT file reading procedure in SOLIDWORKS eDrawings from Release SOLIDWORKS Desktop 2025 through Release SOLIDWORKS Desktop 2026 could allow an attacker to execute arbitrary code while opening a specially cra…
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High 7.3
HDFS native client: Out of bounds write in URI parser of native HDFS client
Out-of-bounds Write vulnerability in Apache Hadoop HDFS native client. This issue affects Apache Hadoop: from 3.2.0 before 3.4.2. Users are recommended to upgrade to version 3.4.2, which fixes the issue.
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Medium 5.3
GPAC SRT Subtitle Import text_to_bifs.c gf_text_import_srt_bifs out-of-bounds write
A security vulnerability has been detected in GPAC up to 2.4.0. This affects the function gf_text_import_srt_bifs of the file src/scene_manager/text_to_bifs.c of the component SRT Subtitle Import. Such manipulation leads to out-of-bounds write. The attack nee…
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High 8.8
Out of bounds memory access in V8 in Google Chrome prior to 144.0.7559.59 allowed a remote attacker to potentially expl…
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High 8.1
Heap buffer overflow with attacker-controlled data in XBM parser
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-13 and 6.9.13-38, a heap buffer overflow vulnerability in the XBM image decoder (ReadXBMImage) allows an attacker to write controlled data p…
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Medium 5.3
BYVoid OpenCC MaxMatchSegmentation.cpp MaxMatchSegmentation heap-based overflow
A weakness has been identified in BYVoid OpenCC up to 1.1.9. This vulnerability affects the function opencc::MaxMatchSegmentation of the file src/MaxMatchSegmentation.cpp. This manipulation causes heap-based buffer overflow. The attack is restricted to local …
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Critical 9.8
Buffer overflow in XPS font parse processing on Small Office Multifunction Printers and Laser Printers(*) which may all…
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Critical 9.8
Buffer overflow in Address Book attribute tag processing on Small Office Multifunction Printers(*) which may allow an a…
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Critical 9.8
Buffer overflow in XPS font fpgm data processing on Small Office Multifunction Printers and Laser Printers(*) which may…
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Critical 9.8
Buffer overflow in CPCA list processing on Small Office Multifunction Printers and Laser Printers(*) which may allow an…
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Critical 9.8
Buffer overflow in XML processing of XPS file in Small Office Multifunction Printers and Laser Printers(*) which may al…
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Critical 9.8
Buffer overflow in print job processing by WSD on Small Office Multifunction Printers and Laser Printers(*) which may a…
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High 7.5
Redragon Gaming Mouse - 'REDRAGON_MOUSE.sys' Denial of Service (PoC)
Redragon Gaming Mouse driver contains a kernel-level vulnerability that allows attackers to trigger a denial of service by sending malformed IOCTL requests. Attackers can send a crafted 2000-byte buffer with specific byte patterns to the REDRAGON_MOUSE device…
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Critical 9.8
Ether_MP3_CD_Burner 1.3.8 - Buffer Overflow (SEH)
Ether MP3 CD Burner 1.3.8 contains a buffer overflow vulnerability in the registration name field that allows remote code execution. Attackers can craft a malicious payload to overwrite SEH handlers and execute a bind shell on port 3110 by exploiting improper…
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Critical 9.8
Cmder Console Emulator 1.3.18 - 'Cmder.exe' Denial of Service (PoC)
Cmder Console Emulator 1.3.18 contains a buffer overflow vulnerability that allows attackers to trigger a denial of service condition through a maliciously crafted .cmd file. Attackers can create a specially constructed .cmd file with repeated characters to o…
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High 8.4
YouTube Video Grabber 1.9.9.1 - Buffer Overflow (SEH)
YouTube Video Grabber, now referred to as YouTube Downloader, 1.9.9.1 contains a buffer overflow vulnerability that allows attackers to execute arbitrary code by overwriting the Structured Exception Handler. Attackers can craft a malicious payload of 712 byte…
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Critical 9.8
Kingdia CD Extractor 3.0.2 - Buffer Overflow (SEH)
Kingdia CD Extractor 3.0.2 contains a buffer overflow vulnerability in the registration name field that allows attackers to execute arbitrary code. Attackers can craft a malicious payload exceeding 256 bytes to overwrite Structured Exception Handler and gain …
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Critical 9.8
10-Strike Network Inventory Explorer Pro 9.31 - Buffer Overflow (SEH)
10-Strike Network Inventory Explorer Pro 9.31 contains a buffer overflow vulnerability in the text file import functionality that allows remote code execution. Attackers can craft a malicious text file with carefully constructed payload to trigger a reverse s…
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Medium 5.5
AbsoluteTelnet 11.24 - 'Username' Denial of Service (PoC)
AbsoluteTelnet 11.24 contains a denial of service vulnerability that allows local attackers to crash the application by manipulating username and error report fields. Attackers can trigger the crash by inserting 1000 characters into the username or email addr…
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Medium 5.5
AbsoluteTelnet 11.24 - 'Phone' Denial of Service (PoC)
AbsoluteTelnet 11.24 contains a denial of service vulnerability that allows local attackers to crash the application by manipulating DialUp connection and license name fields. Attackers can generate a 1000-character payload and paste it into specific input fi…
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Medium 5.5
Out-of-bounds Write in Wireshark
BLF file parser crash in Wireshark 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12 allows denial of service
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Medium 5.3
Out-of-bounds Write in Wireshark
SOME/IP-SD protocol dissector crash in Wireshark 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12 allows denial of service
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Medium 5.3
Out-of-bounds Write in Wireshark
IEEE 802.11 protocol dissector crash in Wireshark 4.6.0 to 4.6.2 and 4.4.0 to 4.4.12 allows denial of service
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Medium 5.6
FreeRDP has a global-buffer-overflow in crypto_base64_decode
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, global-buffer-overflow was observed in FreeRDP's Base64 decoding path. The root cause appears to be implementation-defined char signedness: on Arm/AArch64 builds, plain char is …
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Medium 6.8
FreeRDP has a heap-buffer-overflow in ndr_read_uint8Array
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, RDPEAR’s NDR array reader does not perform bounds checking on the on‑wire element count and can write past the heap buffer allocated from hints, causing a heap buffer overflow i…
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Medium 6.8
FreeRDP has a heap-buffer-overflow in audin_process_formats
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a malicious RDP server can trigger a heap-buffer-overflow write in the FreeRDP client when processing Audio Input (AUDIN) format lists. audin_process_formats reuses callback->fo…
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Medium 5.1
TinyOS <= 2.1.2 Global Buffer Overflow in printfUART
TinyOS versions up to and including 2.1.2 contain a global buffer overflow vulnerability in the printfUART formatted output implementation used within the ZigBee / IEEE 802.15.4 networking stack. The implementation formats output into a fixed-size global buff…