CVE-2011-4528

MediumCVSS 5.0/10Last modified Jun 16, 2026

Description

Unbound before 1.4.13p2 attempts to free unallocated memory during processing of duplicate CNAME records in a signed zone, which allows remote DNS servers to cause a denial of service (daemon crash) via a crafted response.

Metrics

CVSS 2.0 5.0/10AV:N/AC:L/Au:N/C:N/I:N/A:P

Weakness enumeration

CWE-399

Affected software

No affected versions have been published.

Timeline

Published
Dec 20, 2011
Last modified
Jun 16, 2026
NVD status
Modified

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CVE-2011-4528: Medium severity, CVSS 5.0 | Vulnix