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CVE Record

CVE-2009-1086: Heap-based buffer overflow in the ldns_rr_new_frm_str_internal function in ldns 1.4.x allows remote attacke...

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.

UnknownCVSS not scoredNot KEV-listedUpdated
Glexia's TakeAutomated analysis

Security readout for executives and security teams

CVE-2009-1086 is an old ldns 1.4.x memory corruption flaw. A crafted DNS resource record with an overly long class field, and possibly TTL field, could crash affected software and may allow code execution. Business risk is mainly legacy or embedded systems still using vulnerable ldns builds. Exposure is most likely in legacy Linux distributions, embedded appliances, or applications bundling ldns 1.4.x and parsing untrusted DNS resource record text. Current systems are less likely exposed if they have received normal distribution updates. Prioritize remediation where ldns 1.4.x remains in production or embedded products. The CVE is old, but remote memory corruption with possible code execution is high impact if still present. For modern patched fleets, urgency is mainly inventory confirmation. Mitigation focus: Inventory systems and applications for ldns 1.4.x usage.; Apply vendor or distribution updates referenced by Debian, SUSE, or NLnet Labs.; If bundled, update the embedded ldns dependency through the application vendor..

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Potential ATT&CK relevance

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CVE-2009-1086 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
1Source links

CVSS and timeline data

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Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

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