Buffer overflow in Zapping-Vbi Libzvbi
CVE-2026-110654
libzvbi through 0.2.45 contains an out-of-bounds write vulnerability in the Teletext decoder that allows attackers to corrupt memory by supplying unvalidated DRCS pixel-mode values in X/28/3 packets. Attackers can send a crafted Teletext stream decoded via vbi_decode with every slot set to DRCS_MODE_6_5_4, causing convert_drcs to overflow chars[48][60] and crash the application.
Vulnerability class: Buffer Overflow
Published .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/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/zvbi-teletext-drcs-mode-oob-write (technical-description, exploit)
- github.com/zapping-vbi/zvbi/blob/d3a5ee9f2b047bf16cd1ee5ccf6ec05ee75409d0/src/p… (technical-description)
- github.com/zapping-vbi/zvbi (product)
- www.vulncheck.com/advisories/libzvbi-through-0.2.45-out-of-bounds-write-via-tel… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-110654?
- CVE-2026-110654 is a medium-severity vulnerability in Zapping-Vbi Libzvbi, classified under Out-of-bounds Write. CVSS score: 6.1/10. Published 2026-10-14.
- How severe is CVE-2026-110654?
- Medium severity. CVSS v3 base score is 6.1 out of 10.