[UPDATE] [medium] libvirt: Vulnerability allows denial of service

mediumCVE-2025-12748

A local attacker can exploit a vulnerability in libvirt to conduct a denial of service attack.

CSIRTS triage

vendor: libvirt product: libvirt Denial of service

What: A local attacker can exploit a vulnerability in libvirt to conduct a denial of service attack.
Who is affected: Deployments of libvirt.
Urgency: Remediation is medium urgency as it requires local access to exploit.
Action: Update to the latest version when available.

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

⚡ Watch libvirt

Get an email when a new libvirt advisory drops — max one per day, one-click unsubscribe.

Details

Source: CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity: medium
Published: 2026-07-01
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-2026-1598

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-2025-127480.20% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 10% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2025-12748	coverage & exploitation status	NVD · CVE.org

Recent advisories for libvirt

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.

high[UPDATE] [high] QEMU and libvirt: Multiple vulnerabilitiescert-bund · 2026-07-09