# CVE-2024-52616: Avahi: avahi wide-area dns predictable transaction ids

Status: published. Published: 2024-11-21. Updated: 2026-11-05.

A flaw was found in the Avahi-daemon, where it initializes DNS transaction IDs randomly only once at startup, incrementing them sequentially after that. This predictable behavior facilitates DNS spoofing attacks, allowing attackers to guess transaction IDs.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- avahi /  (avahi): ≥ 0; < 0.9-rc2 (affected, semver). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 9 (avahi): ≥ 0:0.8-22.el9_6; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 7 (avahi): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8 (avahi): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat OpenShift Container Platform 4 (openshift/ose-rhel-coreos-9): Version range not reported. Source: CNA: redhat

## Severity and prioritization

- CVSS 3.1: 5.3 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N; source: CNA: redhat

- CISA KEV: No listing in collected sources

- EPSS: 0.73% as of 2026-11-04; percentile 54.24%

- SSVC: exploitation none; automatable yes; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-334

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://access.redhat.com/errata/RHSA-2025:7437 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/security/cve/CVE-2024-52616 (CNA: redhat; vdb-entry, x_refsource_REDHAT)

- https://bugzilla.redhat.com/show_bug.cgi?id=2326429 (CNA: redhat; issue-tracking, x_refsource_REDHAT)

- https://github.com/avahi/avahi/pull/577 (CNA: redhat)

## Provenance

- CNA: redhat: https://www.cve.org/CVERecord?id=CVE-2024-52616; retrieved 2026-11-05; source updated 2026-11-05

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2024-52616; retrieved 2026-11-05; source updated Not reported

Revision: 6ac9a9b82180a65845cbd27813f312d7003276ba079bba01b09944a8eba3dc57

Canonical: https://y2.dev/cve/CVE-2024-52616

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