[UPDATE] [medium] avahi: Vulnerability allows denial of service
A local attacker can exploit a vulnerability in avahi to conduct a denial of service attack.
CSIRTS triage
- What
- A vulnerability allows a Denial of Service attack.
- Who is affected
- Local attackers exploiting vulnerabilities in avahi.
- Urgency
- Remediation is medium urgency as it could disrupt services.
- Action
- Update avahi to the latest version.
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-2026-0975
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-2026-349330.20% 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-2026-34933 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for avahi
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.
- medium[UPDATE] [medium] avahi-daemon: Vulnerability allows denial of servicecert-bund · 2026-07-02
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