Out-of-bounds Read in Gdraheim Zziplib
CVE-2026-111142
Zziplib through 0.13.80 contains an out-of-bounds read vulnerability in zzip/mmapped.c that allows attackers to over-read heap memory via a crafted ZIP central directory. Attackers can craft an end-of-central-directory record placing the first entry near the buffer end, causing zzip_disk_entry_strdup_name to read past the buffer and crash the application.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@haind-pwn/zziplib-zip-central-directory-oob-read (technical-description)
- github.com/gdraheim/zziplib/blob/f58313c1f65f46bf73f3526d1afd4d6bb46cc4ae/zzip/… (technical-description)
- github.com/gdraheim/zziplib/blob/f58313c1f65f46bf73f3526d1afd4d6bb46cc4ae/zzip/… (technical-description)
- github.com/gdraheim/zziplib (product)
- www.vulncheck.com/advisories/zziplib-through-0.13.80-out-of-bounds-read-via-zzi… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-111142?
- CVE-2026-111142 is a medium-severity vulnerability in Gdraheim Zziplib, classified under Out-of-bounds Read. CVSS score: 5.5/10. Published 2026-10-15.
- How severe is CVE-2026-111142?
- Medium severity. CVSS v3 base score is 5.5 out of 10.