CVE-2026-65704

Katalog CVE

CVSS 7.8 · High EPSS 0,18%

Kerentanan Integer Underflow (Wrap or Wraparound) pada ffmpeg. Skor CVSS 3.1 7.8 (High) menurut vulncheck.com.

Deskripsi (NVD)

FFmpeg through 8.1.2 contains an out-of-bounds write vulnerability that allows attackers to cause heap corruption by supplying a crafted ffconcat file processed with the -safe 0 flag. The TY demuxer's demux_audio() function decrements packet size without bounds checking, producing a negative size value that is passed to memcpy() in shorten_decode_frame(), where conversion to size_t wraps the value to near SIZE_MAX and triggers reads beyond the source allocation and writes far beyond the Shorten decoder's bitstream buffer.

Rincian

Terbit di NVD

23 Juli 2026

Terakhir diubah

7 Agustus 2026

Status NVD

Analyzed

CVSS 3.1

7.8 (High), sumber vulncheck.com
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-191: Integer Underflow (Wrap or Wraparound)
CWE-787: Out-of-bounds Write

EPSS (30 hari)

0,18% peluang dieksploitasi; lebih tinggi dari 6,8% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/de771bd52774a52d45b0e2c82e56995a1ef40df7 patch
• https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23767 issue tracking · patch
• https://www.vulncheck.com/advisories/ffmpeg-out-of-bounds-write-via-ty-demuxer-and-shorten-decoder advisory pihak ketiga