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Case File

CVE-2021-26720

HIGH · CVSS 7.8 EPSS 0.40%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-02-17 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

CVE
CVE-2021-26720
Severity
HIGH
CVSS
7.8
EPSS
0.40%
Linux Debian

Original NVD Description

avahi-daemon-check-dns.sh in the Debian avahi package through 0.8-4 is executed as root via /etc/network/if-up.d/avahi-daemon, and allows a local attacker to cause a denial of service or create arbitrary empty files via a symlink attack on files under /run/avahi-daemon. NOTE: this only affects the packaging for Debian GNU/Linux (used indirectly by SUSE), not the upstream Avahi product.