Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC PR UI S C I A CVSS EPSS %ile KEV L L L N U H H H 7.8 .0011 1.1 —
AFFECTED Product Versions Fixed FFmpeg unspecified —
TIMELINE Sep 23 Reserved by mitre Sep 23 Published (CNA: mitre) Oct 15 RESCORED — CVE-2026-96611 (FFmpeg). CVSS 6.9 → 7.8 (NVD).
FFmpeg before 9.0 has a signed integer overflow in libavformat/mov.c. In mov_read_ispe(), uint32_t width/height values from a crafted HEIF ispe box are stored into signed int fields without bounds checking, allowing values exceeding INT_MAX to become negative. In read_image_grid(), accumulating these values causes signed integer overflow (undefined behavior per C17 section 6.5), which on x86 wraps to a small positive value, bypassing downstream validity checks.
| Date | Event | Detail |
|---|---|---|
| September 23, 2026 | Reserved | Reserved by mitre |
| September 23, 2026 | Published | Published (CNA: mitre) |
| October 15, 2026 | RESCORED | RESCORED — CVE-2026-96611 (FFmpeg). CVSS 6.9 → 7.8 (NVD). |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| FFmpeg | FFmpeg | — | — | — |
Authoritative record: CVE-2026-96611 at cve.org
Vendors: ffmpeg
Weaknesses: CWE-190
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-96611 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
