Security readout for executives and security teams
This is an old remote denial-of-service issue in Nortel PC Client SIP Soft Phone. A specially malformed SIP header can crash the client, disrupting voice service for affected users. The bundle does not provide CVSS, CWE, a vendor patch, or evidence of active exploitation. Exposure appears limited to organizations still running the named legacy Nortel softphone build and accepting SIP traffic from untrusted or weakly controlled sources. If that client is not deployed, exposure is unlikely based on the provided sources. Treat this as a targeted legacy availability risk. It is not supported by evidence of active exploitation, but affected softphones could be disrupted remotely. Priority should depend on whether the product is still deployed in business-critical voice workflows. Mitigation focus: Identify any Nortel PC Client SIP Soft Phone 4.1 build 3.5.208 deployments.; Check Nortel or successor vendor guidance for patches, upgrades, or retirement direction.; Restrict SIP traffic to trusted call-control infrastructure where operationally possible..
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.
CVE-2007-3361 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
- nortel-sipheader-dos(35154)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.