CVE-2015-8661: n/a vulnerability

CVE-2015-8661: The h264_slice_header_init function in libavcodec/h264_slice.c in FFmpeg before 2.8.3 does not validate the...

The h264_slice_header_init function in libavcodec/h264_slice.c in FFmpeg before 2.8.3 does not validate the relationship between the number of threads and the number of slices, which allows remote attackers to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact via crafted H.264 data.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 08:20 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2015-8661 affects FFmpeg H.264 decoding before 2.8.3. A malicious video stream or file could crash software that processes it. The public record describes denial of service and only says other impact is possible, without details. Exposure is most likely in media pipelines, web upload processors, transcoding services, or desktop/server applications using FFmpeg/libavcodec before 2.8.3 or unfixed distro packages. Prioritize remediation for internet-facing or customer-facing media processing. Legacy internal-only systems are lower urgency, but should still be updated because crafted media can cause service disruption. Mitigation focus: Upgrade FFmpeg to 2.8.3 or later where applicable.; Apply fixed vendor packages from the relevant Linux distribution.; Restrict untrusted media processing until affected decoders are updated..

Prepared: Jun 13, 2026, 21:26 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Dec 24, 2015, 01:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
[debian-lts-announce] 20181220 [SECURITY] [DLA 1611-1] libav security updateCVE reference · mailing-list, x_refsource_MLIST

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

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Weakness

CWE details

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