CVE-2025-59529: avahi before 0.9 (exclusive), 0.9 · update rc1, <= 0.9-rc5

CVE-2025-59529 affects cbl2 avahi 0.8-4 on CBL Mariner 2.0. CVSS 3.1 base score 5.5 (MEDIUM, Vendor/CNA). EPSS 0.00222 (percentile 0.12711), scored 25-Oct-2026.

Affected technology

avahi · before 0.9 (exclusive)
avahi

avahi · 0.9 · update rc1
avahi

avahi · <= 0.9-rc5
avahi

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Local · Low privileges required · No user interaction required

What an attacker can do

Unprivileged local users can exhaust daemon memory and file descriptors, causing a denial of service system-wide for mDNS/DNS-SD. Vendor/CNA’s CVSS 3.1 assessment (base score 5.5/10) rates confidentiality and integrity impact as none; availability impact as high.

Published 25-Oct-2026 21:03 UTC

CWE: CWE-400
Product: cbl2 avahi 0.8-4 on CBL Mariner 2.0
CCR priority: 22.1 /100 (P4)
CVSS 3.1: 5.5 /10 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H · Vendor/CNA
EPSS: 0.00222 · percentile 0.12711 · 2026-10-25
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-25 19:52:47.952465+00:00 UTC
Microsoft MSRC Security Update Guide (CVRF) · Source record · observed 2026-10-04 07:08:49.022374+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-24 01:40:49.068977+00:00 UTC
OSV.dev · Source record · observed 2026-10-24 16:38:25.544256+00:00 UTC
OSV.dev · Source record · observed 2026-10-24 06:16:23.983863+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2025-59529.html