OPENSUSE-SU-2026:21831-1: clamav security update

OPENSUSE-SU-2026:21831-1, released September 11, 2026, fixes 9 CVEs in clamav (version 1.5.4-160000.1.1). One of them is being exploited (CVE-2025-8088); 1 on CISA KEV. Patch Radar priority: Patch now.

Patch now1 on CISA KEVKnown ransomware use

CVEs closed

None rated Critical

Exploited

CVE-2025-8088

Highest CVSS

8.4

Base score, 0 to 10

Highest EPSS

0.9429

99th percentile

Priority of the 9 CVEs

Patch now 1
                                Urgent 0
                                High 7
                                Routine 1

Fixed package versions

Product	Release	Fixed in
clamav	opensuse-leap 16.0	1.5.4-160000.1.1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Patch now	CVE-2025-8088	RARLAB WinRAR Path Traversal Vulnerability	8.4	0.9429	KEVRansomwareExploited
High	CVE-2026-20348	ClamAV XAR File Format Processing Memory Corruption Vulnerability	7.5	0.0072	None reported
High	CVE-2026-20337	ClamAV ZIP File Format Processing Memory Corruption Vulnerability	7.5	0.0060	None reported
High	CVE-2026-20339	ClamAV PESpin File Format Processing Integer Overflow Vulnerability	7.5	0.0056	None reported
High	CVE-2026-20345	ClamAV GPT File Format Processing Memory Corruption Vulnerability	7.5	0.0056	None reported
High	CVE-2026-20347	ClamAV Mach-O File Format Processing Memory Corruption Vulnerability	7.5	0.0056	None reported
High	CVE-2026-20338	ClamAV ZIP File Format Processing Memory Corruption Vulnerability	7.5	0.0056	None reported
High	CVE-2026-20346	ClamAV PDF File Format Processing Memory Corruption Vulnerability	7.5	0.0054	None reported
Routine	CVE-2026-46671	clamav: This update for clamav fixes the following issues: - CVE-2026-20337: Improper boundary checks for content in zip arc...	n/a	0.0015	None reported

Also fixes CVE-2025-8088

SUSE-SU-2026:4180-1
clamav on sles 15.6, sles 15.7
SUSE-SU-2026:23727-1
clamav on sles 16.0
WinRAR 7.13.0
WinRAR

Vendor advisory

https://osv.dev/vulnerability/openSUSE-SU-2026:21831-1

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