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[UPDATE] [medium] libarchive: Vulnerability allows code execution

mediumCVE-2026-5121
A remote attacker can exploit a vulnerability in libarchive to execute arbitrary code.

CSIRTS triage

vendor: libarchiveproduct: libarchiveRemote code execution
What
A vulnerability allows code execution.
Who is affected
A remote attacker can exploit this vulnerability.
Urgency
Remediation is medium urgency as the severity is moderate.
Action
Patch libarchive to the latest version to address the vulnerability.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity
medium
Published
2026-07-06
Exploitation
Not in CISA KEV at last sync
Language
Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0923

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-5121coverage & exploitation statusNVD · CVE.org

Recent advisories for libarchive

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

More from CERT-Bund (BSI) Security Advisories