[NEW] [low] libarchive: Vulnerability allows unspecified attack
A local attacker can exploit a vulnerability in libarchive to carry out an unspecified attack.
CSIRTS triage
- What
- A local attacker can exploit a vulnerability in libarchive to carry out an unspecified attack.
- Who is affected
- Local deployments of libarchive are affected.
- Urgency
- Remediation is low urgency as the attack vector is unspecified and less critical.
- Action
- Consider updating libarchive to the latest version as a precaution.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2456
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.
- Low exploitation riskCVE-2026-165170.08% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 0% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-16517 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
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.
- low[NEW] [low] libarchive: Vulnerability allows code execution and DoScert-bund · 2026-07-22
- medium[UPDATE] [medium] libarchive: Vulnerability allows denial of servicecert-bund · 2026-07-22
- lowCVE-2026-16517: A signed integer overflow vulnerability was found in libarchive's ZIP writer. In the archive_w…nvd · 2026-07-21
- unknownUSN-8581-1: libarchive vulnerabilitiesubuntu · 2026-07-21
- lowCVE-2026-15028: Libarchive: heap overflow oob read while parsing a tar archive contains a pax extended headermsrc · 2026-07-14
- lowCVE-2026-16517: Libarchive: libarchive: signed integer overflow in archive_write_zip_headermsrc · 2026-07-14
More from CERT-Bund (BSI) Security Advisories
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- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow denial of service2026-07-31
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities2026-07-31
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow unspecified attack2026-07-31