Vulnerability Report

CVE-2009-1086

Title: Nlnetlabs Ldns RCE

Memory Corruption

Proof Of Concept

No public PoC currently indexed for CVE-2009-1086.

CWE Category CWE-399

Published Date Mar 25, 2009

Modified Date Jun 16, 2026

Exploit Status Not Found

Score 6.4 CVSS v2.0

Exploit Probability (EPSS)

3.47%

Vulnerability Summary

CVE-2009-1086: Heap-based buffer overflow in the ldns_rr_new_frm_str_internal function in ldns 1.4.x allows remote attackers to cause a denial of service (memory corruption) and possibly execute arbitrary code via a DNS resource record (RR) with a long (1) class field (clas variable) and possibly (2) TTL field.

Impacted Vendors

nlnetlabs 1

Reference Links

http://lists.opensuse.org/opensuse-security-announce/2009-05/msg00000.html http://secunia.com/advisories/35013 http://secunia.com/advisories/35065 http://www.debian.org/security/2009/dsa-1795 http://www.nlnetlabs.nl/bugs/show_bug.cgi?id=232 http://www.nlnetlabs.nl/svn/ldns/tags/release-1.5.0/Changelog http://www.openwall.com/lists/oss-security/2009/03/24/4 http://www.securityfocus.com/bid/34233 http://lists.opensuse.org/opensuse-security-announce/2009-05/msg00000.html http://secunia.com/advisories/35013 http://secunia.com/advisories/35065 http://www.debian.org/security/2009/dsa-1795 http://www.nlnetlabs.nl/bugs/show_bug.cgi?id=232 http://www.nlnetlabs.nl/svn/ldns/tags/release-1.5.0/Changelog http://www.openwall.com/lists/oss-security/2009/03/24/4 http://www.securityfocus.com/bid/34233

CVSS v2.0

Source Entity [email protected]

Severity MEDIUM

6.4

Access Vector

N/A

Authentication

N/A

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

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2009-1086 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 09, 2025 MODIFIED

Vulnerability data or affected products updated.

March 25, 2009 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:L/Au:N/C:N/I:P/A:P

Affected Stack

No specific products linked.