CVE-2026-117556: zchunk before 1.5.5 Heap Out-of-Bounds Read via read_preface()
Overview
- Severity
- Medium (CVSS 4.3)
- CVSS Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
- Exploit Status
- Not Exploited
- Patch Tuesday
- 2026-Oct
- Released
- 2026-10-29
- EPSS Score
- 0.33% (percentile: 25.8%)
Affected Products (1)
Open Source Software
- azl3 rapidjson 1.1.0-8 on Azure Linux 3.0
Revision History
- 2026-10-29: Information published.