CVE-2026-66040

Katalog CVE

CVSS 8.8 · High EPSS 0,78%

Kerentanan Heap-based Buffer Overflow pada ffmpeg. Skor CVSS 3.1 8.8 (High) menurut NVD.

Deskripsi (NVD)

FFmpeg through 8.1.2, fixed in commit b506faf, contains a heap out-of-bounds write vulnerability in the native PNG and APNG encoders that allows remote attackers to corrupt heap memory by supplying a crafted PNG image with a malicious eXIf chunk. Attackers can craft an eXIf chunk where multiple IFD entries reference the same large value payload, causing canonical serialization to expand the output far beyond the undersized allocation estimated by add_exif_profile_size(), resulting in png_write_chunk() writing tens of thousands of bytes past the buffer boundary, leading to deterministic heap corruption, process crash, and potentially arbitrary code execution.

Rincian

Terbit di NVD

24 Juli 2026

Terakhir diubah

7 Agustus 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-122: Heap-based Buffer Overflow

EPSS (30 hari)

0,78% peluang dieksploitasi; lebih tinggi dari 54,6% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/b506fafec9a19fcbc2be5271875fd4a63d6615bc patch
• https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23786 issue tracking · patch
• https://www.vulncheck.com/advisories/ffmpeg-heap-out-of-bounds-write-via-png-apng-exif-encoder advisory pihak ketiga