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Including CVEs outside Waratek scope✕Product zlib✕
Overview 12 matches · 0 in Waratek scope · 0 protected · 0 exploited · 0 CISA KEV · 0 public PoC · 0 EPSS ≥ 0.5
12matches 0in Waratek scope0.0% 0protected0.0% 0exploited0.0% 0CISA KEV0.0% 0public PoC0.0% 0EPSS ≥ 0.50.0%
Protected by Waratek 0 0.0% Rule in development 0 0.0% Mitigation candidate 0 0.0% No exploit published 0 0.0% Outside Waratek scope 2 16.7% Not applicable 10 83.3% Withdrawn CVE 0 0.0%
Critical 4 33.3% High 3 25.0% Medium 3 25.0% Low 2 16.7% None 0 0.0% Unknown 0 0.0%
blocked by ARMR today 0 0.0% partly blocked 0 0.0% not blocked 12 100.0% not established 0 0.0% unrecorded 0 0.0%
Exploited 0 0.0% Working exploit published 0 0.0% Proof of concept only 0 0.0% Forecast only 0 0.0% No public exploit 12 100.0%
split by peak 4 / year
Not applicable: 10Outside Waratek scope: 2 Low: 2Medium: 3High: 3Critical: 4 not blocked: 12 No public exploit: 12
20022 Not applicable2 Critical1 Medium1 not blocked2 No public exploit2 20030 20041 Not applicable1 Low1 not blocked1 No public exploit1 20052 Not applicable2 High1 Medium1 not blocked2 No public exploit2 20060 20070 20080 20090 20100 20110 20120 20130 20140 20150 20160 20174 Outside Waratek scope2 Not applicable2 Critical2 High2 not blocked4 No public exploit4 20180 20190 20200 20210 20220 20231 Not applicable1 Critical1 not blocked1 No public exploit1 20241 Not applicable1 Medium1 not blocked1 No public exploit1 20250 20261 Not applicable1 Low1 not blocked1 No public exploit1
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12 matches Sign in to download these CVEs as CSV or JSON, or to follow them in a feed.
CVE Severity Published▾ Status Exploitation Description
CVE-2026-27820 Low 2026-04-16 Not applicable No public exploit zlib is a Ruby interface for the zlib compression/decompression library. Versions 3.0.0 and below, 3.1.0, 3.1.1, 3.2.0 and 3.2.1 contain a buffer overflow vulnerability in the Zlib::GzipReader. The zstream_buffer_ungets function prepends caller-provided bytes ahead of previously produced output but fails to guarantee the backing Ruby string has enough capacity before the memmove shifts the existing data. This can lead to memory corruption when the buffer length exceeds capacity. This issue has been fixed in versions 3.0.1, 3.1.2 and 3.2.3.
CVE-2023-6992 Medium 2024-01-04 Not applicable No public exploit Cloudflare version of zlib library was found to be vulnerable to memory corruption issues affecting the deflation algorithm implementation (deflate.c). The issues resulted from improper input validation and heap-based buffer overflow. A local attacker could exploit the problem during compression using a crafted malicious file potentially leading to denial of service of the software. Patches: The issue has been patched in commit 8352d10 https://github.com/cloudflare/zlib/commit/8352d108c05db1bdc5ac3bdf834dad641694c13c . The upstream repository is not affected.
CVE-2023-45853 Critical 2023-10-14 Not applicable No public exploit 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.
CVE-2016-9843 Critical 2017-05-23 Outside Waratek scope No public exploit 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.
CVE-2016-9842 High 2017-05-23 Not applicable No public exploit 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.
CVE-2016-9841 Critical 2017-05-23 Not applicable No public exploit inffast.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact by leveraging improper pointer arithmetic.
CVE-2016-9840 High 2017-05-23 Outside Waratek scope No public exploit inftrees.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact by leveraging improper pointer arithmetic.
CVE-2005-1849 Medium 2005-07-26 Not applicable No public exploit 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.
CVE-2005-2096 High 2005-07-06 Not applicable No public exploit 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.
CVE-2004-0797 Low 2004-10-20 Not applicable No public exploit 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).
CVE-2002-2102 Medium 2002-12-31 Not applicable No public exploit InfBlocks.java in JCraft JZlib before 0.0.7 allow remote attackers to cause a denial of service (NullPointerException) via an invalid block of deflated data.
CVE-2002-0059 Critical 2002-03-15 Not applicable No public exploit 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.