Giflib Project Giflib vulnerabilities

CVE-2026-26740 [HIGH] CWE-787 CVE-2026-26740: Buffer Overflow vulnerability in giflib v.5.2.2 allows a remote attacker to cause a denial of servic Buffer Overflow vulnerability in giflib v.5.2.2 allows a remote attacker to cause a denial of service via the EGifGCBToExtension overwriting an existing Graphic Control Extension block without validating its allocated size.

CVE-2018-11489 [HIGH] CWE-129 CVE-2018-11489: The DGifDecompressLine function in dgif_lib.c in GIFLIB (possibly version 3.0.x), as later shipped i The DGifDecompressLine function in dgif_lib.c in GIFLIB (possibly version 3.0.x), as later shipped in cgif.c in sam2p 0.49.4, has a heap-based buffer overflow because a certain CrntCode array index is not checked. This will lead to a denial of service or possibly unspecified other impact.

CVE-2018-11490 [HIGH] CWE-129 CVE-2018-11490: The DGifDecompressLine function in dgif_lib.c in GIFLIB (possibly version 3.0.x), as later shipped i The DGifDecompressLine function in dgif_lib.c in GIFLIB (possibly version 3.0.x), as later shipped in cgif.c in sam2p 0.49.4, has a heap-based buffer overflow because a certain "Private->RunningCode - 2" array index is not checked. This will lead to a denial of service or possibly unspecified other impact.

CVE-2021-40633 [HIGH] CWE-401 CVE-2021-40633: A memory leak (out-of-memory) in gif2rgb in util/gif2rgb.c in giflib 5.1.4 allows remote attackers t A memory leak (out-of-memory) in gif2rgb in util/gif2rgb.c in giflib 5.1.4 allows remote attackers trigger an out of memory exception or denial of service via a gif format file.

CVE-2016-3177 [CRITICAL] CWE-415 CVE-2016-3177: Multiple use-after-free and double-free vulnerabilities in gifcolor.c in GIFLIB 5.1.2 have unspecifi Multiple use-after-free and double-free vulnerabilities in gifcolor.c in GIFLIB 5.1.2 have unspecified impact and attack vectors.

CVE-2025-31344 [HIGH] CVE-2025-31344: Heap-based Buffer Overflow vulnerability in openEuler giflib on Linux Heap-based Buffer Overflow vulnerability in openEuler giflib on Linux. This vulnerability is associated with program files gif2rgb.C. This issue affects giflib: through 5.2.2.

CVE-2005-3350 [HIGH] CVE-2005-3350: libungif library before 4 libungif library before 4.1.0 allows attackers to corrupt memory and possibly execute arbitrary code via a crafted GIF file that leads to an out-of-bounds write.

CVE-2024-45993 [MEDIUM] CWE-787 CVE-2024-45993: Giflib Project v5.2.2 is vulnerable to a heap buffer overflow via gif2rgb. Giflib Project v5.2.2 is vulnerable to a heap buffer overflow via gif2rgb.

CVE-2020-23922 [HIGH] CWE-125 CVE-2020-23922: An issue was discovered in giflib through 5.1.4. DumpScreen2RGB in gif2rgb.c has a heap-based buffer An issue was discovered in giflib through 5.1.4. DumpScreen2RGB in gif2rgb.c has a heap-based buffer over-read.

CVE-2023-48161 [HIGH] CWE-787 CVE-2023-48161: Buffer Overflow vulnerability in GifLib Project GifLib v.5.2.1 allows a local attacker to obtain sen Buffer Overflow vulnerability in GifLib Project GifLib v.5.2.1 allows a local attacker to obtain sensitive information via the DumpSCreen2RGB function in gif2rgb.c

CVE-2019-15133 [MEDIUM] CWE-369 CVE-2019-15133: In GIFLIB before 2019-02-16, a malformed GIF file triggers a divide-by-zero exception in the decoder In GIFLIB before 2019-02-16, a malformed GIF file triggers a divide-by-zero exception in the decoder function DGifSlurp in dgif_lib.c if the height field of the ImageSize data structure is equal to zero.

CVE-2022-28506 [MEDIUM] CWE-787 CVE-2022-28506: There is a heap-buffer-overflow in GIFLIB 5.2.1 function DumpScreen2RGB() in gif2rgb.c:298:45. There is a heap-buffer-overflow in GIFLIB 5.2.1 function DumpScreen2RGB() in gif2rgb.c:298:45.

CVE-2016-3977 [MEDIUM] CWE-119 CVE-2016-3977: Heap-based buffer overflow in util/gif2rgb.c in gif2rgb in giflib 5.1.2 allows remote attackers to c Heap-based buffer overflow in util/gif2rgb.c in gif2rgb in giflib 5.1.2 allows remote attackers to cause a denial of service (application crash) via the background color index in a GIF file.

CVE-2015-7555 [MEDIUM] CWE-119 CVE-2015-7555: Heap-based buffer overflow in giffix.c in giffix in giflib 5.1.1 allows attackers to cause a denial Heap-based buffer overflow in giffix.c in giffix in giflib 5.1.1 allows attackers to cause a denial of service (program crash) via crafted image and logical screen width fields in a GIF file.

CVE-2026-23868 [MEDIUM] CWE-415 CVE-2026-23868: Giflib contains a double-free vulnerability that is the result of a shallow copy in GifMakeSavedImag Giflib contains a double-free vulnerability that is the result of a shallow copy in GifMakeSavedImage and incorrect error handling. The conditions needed to trigger this vulnerability are difficult but may be possible.

CVE-2023-39742 [MEDIUM] CWE-120 CVE-2023-39742: giflib v5.2.1 was discovered to contain a segmentation fault via the component getarg.c. giflib v5.2.1 was discovered to contain a segmentation fault via the component getarg.c.

CVE-2005-2974 [LOW] CVE-2005-2974: libungif library before 4 libungif library before 4.1.0 allows attackers to cause a denial of service via a crafted GIF file that triggers a null dereference.