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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…
Critical9.8EPSS 9.7%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
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.
Timeline
ID reserved
By mitre
- 5 months later
· 5 months later
Published
- 22 years later
· 22 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 9.7% · top 4.5% of all CVEs (8 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Weakness
Affected products
n/a
- affected n/a
References (15)
- CA-2002-07 (opens in a new tab)third-party-advisoryx_refsource_CERTx_transferred
- MDKSA-2002:022 (opens in a new tab)vendor-advisoryx_refsource_MANDRAKEx_transferred
- 4267 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- zlib-doublefree-memory-corruption(8427) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- HPSBTL0204-030 (opens in a new tab)vendor-advisoryx_refsource_HPx_transferred
- CLA-2002:469 (opens in a new tab)vendor-advisoryx_refsource_CONECTIVAx_transferred
- MDKSA-2002:023 (opens in a new tab)vendor-advisoryx_refsource_MANDRAKEx_transferred
- DSA-122 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- MDKSA-2002:024 (opens in a new tab)vendor-advisoryx_refsource_MANDRAKEx_transferred
- VU#368819 (opens in a new tab)third-party-advisoryx_refsource_CERT-VNx_transferred
- RHSA-2002:027 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- CSSA-2002-014.1 (opens in a new tab)vendor-advisoryx_refsource_CALDERAx_transferred
- HPSBTL0204-036 (opens in a new tab)vendor-advisoryx_refsource_HPx_transferred
- RHSA-2002:026 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- HPSBTL0204-037 (opens in a new tab)vendor-advisoryx_refsource_HPx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2002-0059)Record last updated .