Out-of-bounds Read in Struktur Libheif
CVE-2026-41071
libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and prior, a crafted HEIF sequence file where the saiz box declares more samples than actually exist in the track's chunk table causes a heap-buffer-overflow (o…
Vulnerability class: Buffer Overflow
EPSS: 0.000 (13.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H.
Affected products
- Struktur Libheif
- Strukturag Libheif — versions < 1.22.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)
- security-advisories@github.com (Product, x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-41071?
- CVE-2026-41071 is a high-severity vulnerability in Struktur Libheif, classified under Out-of-bounds Read. CVSS score: 8.1/10. Published 2026-05-22.
- How severe is CVE-2026-41071?
- High severity. CVSS v3 base score is 8.1 out of 10.