Security readout for executives and security teams
CVE-2009-5140 describes a Linksys SPA2102 SIP weakness where an invalid authentication challenge can cause hashed credentials to be disclosed. This does not reveal the password directly, but it can help attackers guess it offline. Risk is highest where old SPA2102 adapters remain reachable from untrusted networks. Exposure is likely limited to environments still operating Linksys SPA2102 phone adapters, especially if SIP services are internet-reachable or accessible from broad internal networks. The source bundle does not identify other affected products or versions. Treat this as a targeted legacy-telephony risk, not a broad enterprise emergency. Prioritize discovery and exposure reduction if SPA2102 devices support business voice services or are reachable from the internet. Mitigation focus: Inventory for Linksys SPA2102 devices and exposed SIP services.; Restrict SIP access to trusted networks or required providers only.; Use strong, unique SIP credentials and rotate them where exposure is found..
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
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CVE-2009-5140 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
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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
- https://resources.enablesecurity.com/resources/sipdigestleak-tut.pdfCVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
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