CVE-2026-18393CWE-787

CVE-2026-18393

Medium · published August 28, 2026

CVSS v3.1
5.4
EPSS
0%
Percentile
15.6
In the wild
Unconfirmed
What it is

A flaw was found in FFmpeg. The tdsc_load_cursor() function writes beyond

the bounds of a heap-allocated buffer when processing crafted TDSC cursor

data. A remote attacker could exploit this by supplying a specially crafted

video file, potentially leading to a denial of service or arbitrary code

execution.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:H
CVSS v4.0
Not supplied
EPSS
0.00251 · 15.6th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2026-08-28T16:16Z
References (4)
https://access.redhat.com/security/cve/CVE-2026-18393 · [email protected]https://bugzilla.redhat.com/show_bug.cgi?id=2520309 · [email protected]https://github.com/FFmpeg/FFmpeg/commit/242ff799c75f20bade946314c8d741d0887ee11c · [email protected]https://patchwork.ffmpeg.org/project/ffmpeg/patch/177767065817.63.1948165304485903849@29965ddac10e/ · [email protected]
EPSS history
Timeline
  • 30 AUG 16:16Z
    EPSS moved — → 0%
    epss
  • 28 AUG 09:05Z
    Ffmpeg: ffmpeg: heap buffer overflow in tdsc_load_cursor() via cur_fmt_mono cursor
    cvelistv5