Medium severity5.4NVD Advisory· Published Aug 28, 2026· Updated Aug 28, 2026

CVE-2026-18393

Description

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

FFmpeg/Ffmpegllm-fuzzy
osv-coords3 versions
pkg:rpm/opensuse/ffmpeg-4&distro=openSUSE%20Tumbleweed pkg:rpm/opensuse/ffmpeg-8&distro=openSUSE%20Tumbleweed pkg:rpm/opensuse/ffmpeg-9&distro=openSUSE%20Tumbleweed
< 4.4.8-6.1+ 2 more
- (no CPE)range: < 4.4.8-6.1
- (no CPE)range: < 8.1.2-5.1
- (no CPE)range: < 9.0.1-6.1

Patches

Vulnerability mechanics

References

access.redhat.com/security/cve/CVE-2026-18393nvd
bugzilla.redhat.com/show_bug.cginvd
github.com/FFmpeg/FFmpeg/commit/242ff799c75f20bade946314c8d741d0887ee11cnvd
patchwork.ffmpeg.org/project/ffmpeg/patch/177767065817.63.1948165304485903849@29965ddac10e/nvd

News mentions

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cvss	0.351
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000