The CAF demuxer in modules/demux/caf.c in VideoLAN VLC media player 3.0.4 may read memory…
Priority MEDIUM 46CWE-824Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA.
Summary
The CAF demuxer in modules/demux/caf.c in VideoLAN VLC media player 3.0.4 may read memory from an uninitialized pointer when processing magic cookies in CAF files, because a ReadKukiChunk() cast converts a return value to an unsigned int even if that value is negative. This could result in a denial of service and/or a potential infoleak.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.03916 90th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-19857
- 2026-10-03 Alias added: GHSA-7g6v-cgr9-2355
- 2026-10-06 EPSS moved to the 90th–95th percentile
- 2026-10-16 CISA SSVC decision points changed
References
Sources
- CVE-2018-19857 · CVE Program
- CVE-2018-19857 · NVD
- FIRST EPSS
- GHSA-7g6v-cgr9-2355 · GitHub Advisory Database · CC BY 4.0
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