CVE-2026-112281CWE-121

CVE-2026-112281

Medium · published October 19, 2026

CVSS v3.1
6.1
EPSS
0%
Percentile
9.0
In the wild
Unconfirmed
What it is

libaribb24 (aribb24) through 1.0.3 contains a stack-based buffer overflow vulnerability in decoder_handle_csi() in src/decoder.c that allows attackers to write past a fixed 256-entry array by supplying unbounded CSI parameter bytes. Attackers can embed a caption statement with a CSI introducer and over 256 parameter bytes in media files or broadcast streams to crash FFmpeg or VLC or corrupt the return address.

The record
Technical detail
CVSS v3.1
6.1 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
CVSS v4.0
6.9 · CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
EPSS
0.00197 · 9.0th percentile
Weakness
CWE-121 · Stack-based Buffer Overflow
Published
2026-10-19T18:17Z
References (4)
https://github.com/nkoriyama/aribb24/blob/v1.0.3/src/decoder.c · [email protected]https://hackmd.io/@haindpwn/aribb24-caption-data-unit-and-csi-oob-write · [email protected]https://www.vulncheck.com/advisories/libaribb24-through-1.0.3-stack-buffer-overflow-via-decoder-handle-csi · [email protected]https://hackmd.io/@haindpwn/cve-2026-112280-112281-aribb24-caption-data-unit-and-csi-oob-write · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 21 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 19 OCT 13:55Z
    libaribb24 through 1.0.3 Stack Buffer Overflow via decoder_handle_csi
    cvelistv5
  • 19 OCT 13:55Z
    libaribb24 through 1.0.3 Stack Buffer Overflow via decoder_handle_csi
    cvelistv5