CVE-2026-18393
CVE-2026-18393: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Red Hat
1 advisory- Advisory severityMedium5.4
Medium [CVE-2026-18393] Ffmpeg: ffmpeg: heap buffer overflow in tdsc_load_cursor via cur_fmt_mono cursor
CVE-2026-18393Source published Source updated
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 ffmpeg package is not shipped in base Red Hat Enterprise Linux. It is available through EPEL, Red Hat Enterprise Linux AI, and as a bundled dependency in Red Hat OpenShift AI container images. The vulnerable code resides in libavcodec (tdsc.c), which is compiled and shipped in all FFmpeg builds across these products. The TDSC decoder is present since FFmpeg's initial inclusion of the codec in 2015. Red Hat severity: Moderate — CVSS 5.4…
- Affected products in this advisory
- Red Hat Enterprise Linux AI (RHEL AI) 3
- Red Hat OpenShift AI (RHOAI)
- Source-reported affected versions
- Affected-version details not available in this record.
- Source-reported fixed versions
- No fixed-version detail extracted. This does not mean no fix exists.
- Mitigation guidance
- Avoid opening untrusted TDSC-encoded video content with vulnerable FFmpeg consumers until a patched version is available.
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