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Case File

CVE-2011-4869

HIGH · CVSS 7.8 EPSS 3.10%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2011-12-20 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.8. It may be remotely exploitable. It may lead to a denial-of-service condition.

CVE
CVE-2011-4869
Severity
HIGH
CVSS
7.8
EPSS
3.10%

Original NVD Description

validator/val_nsec3.c in Unbound before 1.4.13p2 does not properly perform proof processing for NSEC3-signed zones, which allows remote DNS servers to cause a denial of service (daemon crash) via a malformed response that lacks expected NSEC3 records, a different vulnerability than CVE-2011-4528.