What is CVE-2026-32741?

CVE-2026-32741 is a high-severity vulnerability in Strukturag Libheif, classified under Heap-based Buffer Overflow. CVSS score: 7.1/10. Published 2026-05-19.

How severe is CVE-2026-32741?

High severity. CVSS v3 base score is 7.1 out of 10.

Buffer overflow in Strukturag Libheif

CVE-2026-32741

libheif is a HEIF and AVIF file format decoder and encoder. Versions 1.21.2 and below contain a heap buffer overflow in MaskImageCodec::decode_mask_image(). When decoding a HEIF file containing a mask image (mski), the function copies the…

Vulnerability class: Buffer Overflow

EPSS: 0.000 (11.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H.

Affected products

Strukturag Libheif — versions < 1.22.0

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-32741?: CVE-2026-32741 is a high-severity vulnerability in Strukturag Libheif, classified under Heap-based Buffer Overflow. CVSS score: 7.1/10. Published 2026-05-19.
How severe is CVE-2026-32741?: High severity. CVSS v3 base score is 7.1 out of 10.