zlib 関連製品全体の CVE とセキュリティ脆弱性情報を集約し、CVSS、EPSS、公開日、脆弱性情報データを掲載しています。
公開された問題は vendor risk memory corruption、バッファオーバーフロー, and パス処理の欠陥 に関連することが多く、vendor surface network services and vendor surface application dependencies の文脈で アプリケーションクラッシュ and vendor impact unexpected behavior などの暴露リスクを伴う場合があります。
掲載データは公開脆弱性情報とセキュリティ公告に基づき、過去の暴露面と修補優先度の評価に利用できます。
| CVE | 概要 | ソース | CVSS 最大値 | EPSS（%） | 公開 | 更新 |
|---|---|---|---|---|---|---|
| CVE-2026-27171 | 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. | [email protected] | 2.9 | 0.01% | 2026-02-18 | 2026-03-25 |
| CVE-2026-22184 | zlib versions up to and including 1.3.1.2 include a global buffer overflow in the untgz utility located under contrib/untgz. The vulnerability is limited to the standalone demonstration utility and does not affect the core zlib compression library. The flaw occurs when a user executes the untgz command with an excessively long archive name supplied via the command line, leading to an out-of-bounds write in a fixed-size global buffer. | [email protected] | 4.6 | 0.04% | 2026-01-07 | 2026-03-18 |
| CVE-2023-45853 | 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. NOTE: MiniZip is not a supported part of the zlib product. NOTE: pyminizip through 0.2.6 is also vulnerable because it bundles an affected zlib version, and exposes the applicable MiniZip code through its compress API. | [email protected] | 9.8 | 1.40% | 2023-10-14 | 2024-12-20 |
| CVE-2022-37434 | 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. NOTE: only applications that call inflateGetHeader are affected. Some common applications bundle the affected zlib source code but may be unable to call inflateGetHeader (e.g., see the nodejs/node reference). | [email protected] | 9.8 | 92.75% | 2022-08-05 | 2025-05-30 |
| CVE-2018-25032 | zlib before 1.2.12 allows memory corruption when deflating (i.e., when compressing) if the input has many distant matches. | [email protected] | 7.5 | 0.09% | 2022-03-25 | 2025-08-21 |
| CVE-2016-9843 | 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. | [email protected] | 9.8 | 17.67% | 2017-05-23 | 2026-05-13 |
| CVE-2016-9842 | 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. | [email protected] | 8.8 | 11.53% | 2017-05-23 | 2026-05-13 |
| CVE-2016-9841 | inffast.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact by leveraging improper pointer arithmetic. | [email protected] | 9.8 | 19.18% | 2017-05-23 | 2026-05-13 |
| CVE-2016-9840 | inftrees.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact by leveraging improper pointer arithmetic. | [email protected] | 8.8 | 9.83% | 2017-05-23 | 2026-05-13 |
| CVE-2015-1191 | Multiple directory traversal vulnerabilities in pigz 2.3.1 allow remote attackers to write to arbitrary files via a (1) full pathname or (2) .. (dot dot) in an archive. | [email protected] | 5.0 | 0.49% | 2015-01-21 | 2026-05-06 |
| CVE-2013-0296 | Race condition in pigz before 2.2.5 uses permissions derived from the umask when compressing a file before setting that file's permissions to match those of the original file, which might allow local users to bypass intended access permissions while compression is occurring. | [email protected] | 4.4 | 0.04% | 2014-04-27 | 2026-05-06 |
| CVE-2005-1849 | 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. | [email protected] | 5.0 | 7.99% | 2005-07-26 | 2026-04-16 |
| CVE-2005-2096 | 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 than 1, which leads to a buffer overflow, as demonstrated using a crafted PNG file. | [email protected] | 7.5 | 43.03% | 2005-07-06 | 2026-04-16 |
| CVE-2004-0797 | 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). | [email protected] | 2.1 | 2.23% | 2004-10-20 | 2026-04-16 |
| CVE-2003-0107 | 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 denial of service or possibly execute arbitrary code. | [email protected] | 7.5 | 35.64% | 2003-03-07 | 2026-04-16 |
| CVE-2002-0059 | 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 free"), which may allow local and remote attackers to execute arbitrary code via a block of malformed compression data. | [email protected] | 9.8 | 28.52% | 2002-03-15 | 2026-04-16 |