Vulnerability Report

CVE-2011-1922

Title: Nlnetlabs Unbound Denial of Service (DoS)

DoS

Proof Of Concept

No public PoC currently indexed for CVE-2011-1922.

CWE Category CWE-399

Published Date May 31, 2011

Modified Date Jun 16, 2026

Exploit Status Not Found

Score 4.3 CVSS v2.0

Exploit Probability (EPSS)

7.08%

Vulnerability Summary

CVE-2011-1922: daemon/worker.c in Unbound 1.x before 1.4.10, when debugging functionality and the interface-automatic option are enabled, allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a crafted DNS request that triggers improper error handling.

Impacted Vendors

fedoraproject 1

nlnetlabs 1

unbound 1

Reference Links

http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061243.html http://osvdb.org/72750 http://secunia.com/advisories/44865 http://unbound.nlnetlabs.nl/downloads/CVE-2011-1922.txt http://www.kb.cert.org/vuls/id/531342 http://www.securityfocus.com/bid/47986 https://exchange.xforce.ibmcloud.com/vulnerabilities/67645 http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061243.html http://osvdb.org/72750 http://secunia.com/advisories/44865 http://unbound.nlnetlabs.nl/downloads/CVE-2011-1922.txt http://www.kb.cert.org/vuls/id/531342 http://www.securityfocus.com/bid/47986 https://exchange.xforce.ibmcloud.com/vulnerabilities/67645

CVSS v2.0

Source Entity [email protected]

Severity MEDIUM

4.3

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:M/Au:N/C:N/I:N/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2011-1922 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

June 16, 2026 MODIFIED

Vulnerability data updated via NVD.

April 29, 2026 MODIFIED

Vulnerability data updated via NVD.

April 11, 2025 MODIFIED

Vulnerability data or affected products updated.

May 31, 2011 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector N/A

Complexity N/A

Privileges N/A

Interaction NONE

CVSS Vector String


                                    AV:N/AC:M/Au:N/C:N/I:N/A:P

Affected Stack

No specific products linked.