CVE-2026-62289

Publication date 13 August 2026

Last updated 25 August 2026

Ubuntu priority

Why this priority?

Cvss 3 Severity Score

Score breakdown

Description

Integer underflow in Fraction constructor via double clap transform application

Status

Show unmaintained releases

Package	Ubuntu Release	Status
libheif	26.04 LTS resolute	Fixed 1.21.2-3ubuntu0.4
	24.04 LTS noble	Fixed 1.17.6-1ubuntu4.7
	22.04 LTS jammy	Vulnerable
	20.04 LTS focal	Vulnerable
	18.04 LTS bionic	Vulnerable

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
libheif	Upstream: f01870c

Severity score breakdown

CVSS version: CVSS v3.0

Base score 4.3 · Medium

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality impact	None
Integrity impact	None
Availability impact	Low

Scores

Parameter	Value
Base score	4.3 · Medium
Exploitability score	-
Impact score	-

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

References

Related Ubuntu Security Notices (USN)

USN-8649-1
libheif vulnerabilities
19 August 2026

Other references

Access our resources on patching vulnerabilities