zziplib through 0.13.80 contains an out-of-bounds read vulnerability in __zzip_parse_root_directory() in zzip/zip.c that allows attackers to read past the mapped central directory in mmap builds due to an ineffective bounds check. Attackers can supply a crafted ZIP whose entry name ends at the central directory end, triggering 28-byte ZIP64 extra field over-reads via zzip_dir_open() that crash the process.
https://hackmd.io/@haind-pwn/zziplib-zip-central-directory-oob-read
Published: 2026-10-15
Updated: 2026-10-15
Base Score: 4
Vector: CVSS2#AV:L/AC:H/Au:N/C:N/I:N/A:C
Severity: Medium
Base Score: 4.7
Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
Severity: Medium
Base Score: 5.7
Vector: CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Severity: Medium
EPSS: 0.00122