CVE-2009-1086
Heap-based buffer overflow in the ldns_rr_new_frm_str_internal function in ldns 1.4.x allows...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2009-1086- CVSS 2.0
- 6.4 Medium
AV:N/AC:L/Au:N/C:N/I:P/A:P - Weakness
- CWE-399
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2009-1086- Updated
- 2026-11-02
EUVDEUVD-2009-1087 No score
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.
- Record
EUVD-2009-1087- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-5957-cmgf-chq8 No score
Heap-based buffer overflow in the ldns_rr_new_frm_str_internal function in ldns 1.4.x allows...
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.
- Record
GHSA-5957-cmgf-chq8- Updated
- 2026-11-02
OSV No score
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.
- Record
CVE-2009-1086- Updated
- 2026-11-02
OSVDEBIAN-CVE-2009-1086 No score
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.
- Record
DEBIAN-CVE-2009-1086- Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2009-1086 is a medium vulnerability (CVSS 6.4) in Nlnetlabs Ldns, published March 25, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.47%, the 89th percentile. Fixed in ldns 1.5.1-1.