Security readout for executives and security teams
CVE-2009-5039 is a Cisco IOS H.323 memory leak that can degrade or stop voice routing services by consuming device memory. The described trigger is many calls over a long period, so urgency depends on whether exposed Cisco IOS voice or gatekeeper functions are still in use. Likely exposure is limited to Cisco IOS deployments running affected H.323 functionality before 15.0(1)XA. The provided data does not list specific hardware platforms, CPEs, or enabled configurations, so asset validation is required. Treat as a targeted reliability risk for legacy Cisco voice infrastructure, not a broad enterprise emergency. Prioritize remediation where H.323 services are internet-exposed, partner-facing, or business-critical. Mitigation focus: Inventory Cisco IOS devices providing H.323 or gatekeeper services.; Compare running versions against Cisco IOS 15.0(1)XA release guidance.; Plan upgrade to a vendor-supported fixed IOS release where applicable..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
Credential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2009-5039 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- cisco-ios-gkcircuitinfodoinacf-dos(64731)CVE reference · vdb-entry, x_refsource_XF
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.