CVE & CISA-KEV Catalog

CVE-2026-32739

MEDIUM

6.5

CVSS v3

Description

libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and below, a crafted 800-byte HEIF sequence file causes an infinite loop in Box_stts::get_sample_duration(), consuming 100% CPU indefinitely with zero progress, leading to DoS. The loop has no iteration limit or timeout and is triggered during file open (parsing) - before any user interaction or image decoding. The process stays alive (no crash, no error logged), making it invisible to crash-based monitoring. This issue has been fixed in version 1.22.0.

How to fix

Remediation Available

heif-gdk-pixbufUbuntu

Fixed in:1.6.1-1ubuntu0.1~esm3USN-8454-1

Fixed in:1.12.0-2ubuntu0.1~esm3USN-8454-1

Fixed in:1.17.6-1ubuntu4.4USN-8454-1

Fixed in:1.20.2-1ubuntu0.4USN-8454-1

heif-thumbnailerUbuntu

Fixed in:1.6.1-1ubuntu0.1~esm3USN-8454-1

Fixed in:1.12.0-2ubuntu0.1~esm3USN-8454-1

Fixed in:1.17.6-1ubuntu4.4USN-8454-1

Fixed in:1.20.2-1ubuntu0.4USN-8454-1

heif-viewUbuntu

Fixed in:1.20.2-1ubuntu0.4USN-8454-1

libheifUbuntu

Fixed in:1.1.0-2ubuntu0.1~esm3USN-8454-1

Fixed in:1.6.1-1ubuntu0.1~esm3USN-8454-1

Fixed in:1.12.0-2ubuntu0.1~esm3USN-8454-1

Fixed in:1.17.6-1ubuntu4.4USN-8454-1

Fixed in:1.20.2-1ubuntu0.4USN-8454-1

libheif-devUbuntu

Fixed in:1.1.0-2ubuntu0.1~esm3USN-8454-1

Fixed in:1.6.1-1ubuntu0.1~esm3USN-8454-1

Fixed in:1.12.0-2ubuntu0.1~esm3USN-8454-1

Fixed in:1.17.6-1ubuntu4.4USN-8454-1

Fixed in:1.20.2-1ubuntu0.4USN-8454-1

libheif-plugin-aomdecUbuntu

Fixed in:1.17.6-1ubuntu4.4USN-8454-1

Fixed in:1.20.2-1ubuntu0.4USN-8454-1

libheif-plugin-aomencUbuntu

Fixed in:1.17.6-1ubuntu4.4USN-8454-1

Fixed in:1.20.2-1ubuntu0.4USN-8454-1

libheif-plugin-dav1dUbuntu

Fixed in:1.17.6-1ubuntu4.4USN-8454-1

Fixed in:1.20.2-1ubuntu0.4USN-8454-1

libheif-plugin-ffmpegdecUbuntu

Fixed in:1.17.6-1ubuntu4.4USN-8454-1

Fixed in:1.20.2-1ubuntu0.4USN-8454-1

libheif-plugin-j2kdecUbuntu

Fixed in:1.17.6-1ubuntu4.4USN-8454-1

Fixed in:1.20.2-1ubuntu0.4USN-8454-1

libheif-plugin-j2kencUbuntu

Fixed in:1.17.6-1ubuntu4.4USN-8454-1

Fixed in:1.20.2-1ubuntu0.4USN-8454-1

libheif-plugin-jpegdecUbuntu

Fixed in:1.17.6-1ubuntu4.4USN-8454-1

Fixed in:1.20.2-1ubuntu0.4USN-8454-1

libheif-plugin-jpegencUbuntu

Fixed in:1.17.6-1ubuntu4.4USN-8454-1

Fixed in:1.20.2-1ubuntu0.4USN-8454-1

libheif-plugin-kvazaarUbuntu

Fixed in:1.20.2-1ubuntu0.4USN-8454-1

libheif-plugin-libde265Ubuntu

Fixed in:1.17.6-1ubuntu4.4USN-8454-1

Fixed in:1.20.2-1ubuntu0.4USN-8454-1

libheif-plugin-rav1eUbuntu

Fixed in:1.17.6-1ubuntu4.4USN-8454-1

Fixed in:1.20.2-1ubuntu0.4USN-8454-1

libheif-plugin-svtencUbuntu

Fixed in:1.17.6-1ubuntu4.4USN-8454-1

Fixed in:1.20.2-1ubuntu0.4USN-8454-1

libheif-plugin-x265Ubuntu

Fixed in:1.17.6-1ubuntu4.4USN-8454-1

Fixed in:1.20.2-1ubuntu0.4USN-8454-1

libheif-plugins-allUbuntu

Fixed in:1.20.2-1ubuntu0.4USN-8454-1

libheif1Ubuntu

Fixed in:1.1.0-2ubuntu0.1~esm3USN-8454-1

Fixed in:1.6.1-1ubuntu0.1~esm3USN-8454-1

Fixed in:1.12.0-2ubuntu0.1~esm3USN-8454-1

Fixed in:1.17.6-1ubuntu4.4USN-8454-1

Fixed in:1.20.2-1ubuntu0.4USN-8454-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Exploit Intelligence

0.32%probability of exploitation in 30 days

24thpercentile

Low risk: more likely to be exploited than 24% of all known CVEs.

References

Exploit1

github.com

Release Notes1

github.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-20.