MEDIUMCVSS v3.1 5.5Vulnerability

CVE-2026-125187

FFmpeg through 9.0.2 contains a reachable assertion vulnerability in the TTA encoder's tta_encode_frame() in libavcodec/ttaenc.c, which never reserves output packet space for the 4-byte CRC. Attackers can supply audio whose sample values and length produce a small, poorly compressible final frame, triggering the av_assert0() in flush_put_bits() and aborting applications transcoding to TTA.

Properties

Severity
MEDIUM
Nvd fetched at
2026-11-10T23:33:48.924589+00:00
Epss score
0.00165
Cvss severity
MEDIUM
Cvss score
5.5
Retrieved at
2026-11-10T23:35:17+00:00
Last source
FIRST EPSS
Score
5.5
Cvss version
3.1
Cve id
CVE-2026-125187
Cvss vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
First seen by Signal
2026-11-09T23:18:15+00:00
Name
CVE-2026-125187
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Published at
2026-11-09T19:16:54.330
Last modified
2026-11-10T21:46:30.733
Epss percentile
0.05727

Related Entities (1)

HAS_WEAKNESS (1)

→[Weakness]Reachable Assertion

Related research

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CVE-2026-125187 (CVSS v3.1 5.5) — Ninja Signal Threat Intelligence | Ninja Signal