CVE-2022-37434
CRITICAL9.8EPSS 92.5%zlib - security update
Published: 8/5/2022Modified: 4/28/2026
Description
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).
Affected packages (6)
- Alpine/zlibfrom 0, < 1.2.11-r4
- Alpine/zlib-ngfrom 0, < 2.0.6-r0
- Debian/libz-mingw-w64from 0
- Debian/zlibfrom 0, < 1:1.2.11.dfsg-2+deb11u2
- Debian/zlibfrom 0, < 1:1.2.11.dfsg-1+deb10u2
- Debian/zlibfrom 0, < 1:1.2.11.dfsg-2+deb11u2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |