ZL
Product
zlib
by zlib · last CVE Sep 3, 2026
16
CVEs
0
On KEV
9.8
Max CVSS
0
New 30D
Severity mix
Critical 5High 6Medium 1Low 0
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Add zlib to your stack to get only the CVEs that touch what you run.

CVECVSSEPSSPublishedSummary · affected versions
CVE-2023-45853
9.8
3%
Oct 14
MiniZip in zlib through 1.3 has an integer overflow and resultant heap-based buffer overflow in zipOpenNewFileInZip4_64 via a long filename, comment, or extra field
Affected: before 1.3.1
CVE-2022-37434
9.8
19%
Aug 5
zlib through 1.2.12 has a heap-based buffer over-read or buffer overflow in inflate in inflate.c via a large gzip header extra field
Affected: through 1.2.12
CVE-2016-9843
9.8
6%
May 23
The crc32_big function in crc32.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact via vectors involving big-endian CRC calculation
Affected: 1.2.0 before 1.2.9
CVE-2016-9841
9.8
8%
May 23
inffast.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact by leveraging improper pointer arithmetic
Affected: 1.2.0 before 1.2.9
CVE-2002-0059
9.8
10%
Mar 15
The decompression algorithm in zlib 1.1.3 and earlier, as used in many different utilities and packages, causes inflateEnd to release certain memory more than once (a "double…
Affected: through 1.1.3
CVE-2016-9842
8.8
5%
May 23
The inflateMark function in inflate.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact via vectors involving left shifts of negative integers
Affected: 1.2.3.4 before 1.2.9
CVE-2016-9840
8.8
5%
May 23
inftrees.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact by leveraging improper pointer arithmetic
Affected: 1.2.0.6 before 1.2.9
CVE-2026-22184
7.8
0%
Jan 7
zlib <= 1.3.1.2 untgz Global Buffer Overflow in TGZfname()
Affected: through 1.3.1.2
CVE-2018-25032
7.5
52%
Mar 25
zlib before 1.2.12 allows memory corruption when deflating (i.e., when compressing) if the input has many distant matches
Affected: 1.2.2.2 before 1.2.12
CVE-2026-85091
7.4
0%
Sep 3
zlib 1.3.1.2 through 1.3.2 Heap Buffer Overflow via gz_vacate
Affected: 1.3.1.2 through 1.3.2
CVE-2026-76844
7.4
1%
Aug 24
zlib 1.2.11 through 1.3.2 Heap Buffer Overflow via Stale gzwrite Pointer After Failed Write
Affected: 1.2.11 through 1.3.2
CVE-2026-27171
5.5
0%
Feb 18
zlib before 1.3.2 allows CPU consumption via crc32_combine64 and crc32_combine_gen64 because x2nmodp can do right shifts within a loop that has no termination condition
Affected: before 1.3.2
CVE-2005-1849
–
4%
Jul 26
inftrees.h in zlib 1.2.2 allows remote attackers to cause a denial of service (application crash) via an invalid file that causes a large dynamic tree to be produced
Affected: 1.2.2
CVE-2005-2096
–
6%
Jul 6
zlib 1.2 and later versions allows remote attackers to cause a denial of service (crash) via a crafted compressed stream with an incomplete code description of a length greater…
Affected: 1.2.0; 1.2.1; 1.2.2
CVE-2004-0797
–
0%
Oct 20
The error handling in the (1) inflate and (2) inflateBack functions in ZLib compression library 1.2.x allows local users to cause a denial of service (application crash)
Affected: 1.2.1
CVE-2003-0107
–
26%
Mar 7
Buffer overflow in the gzprintf function in zlib 1.1.4, when zlib is compiled without vsnprintf or when long inputs are truncated using vsnprintf, allows attackers to cause a…
Affected: 1.1.4
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