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Fencer Intel
high 7.5

CVE-2009-5139 json

The SIP implementation on the Gizmo5 software phone provides hashed credentials in a response to an invalid authentication challenge, which…

published 6y ago modified 4mo ago also EUVD-2009-5094

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 31%
public exploits
0
none known

Summary

The SIP implementation on the Gizmo5 software phone provides hashed credentials in a response to an invalid authentication challenge, which makes it easier for remote attackers to obtain access via a brute-force attack, related to a "SIP Digest Leak" issue.

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Exploit prediction

0.37% chance of exploitation in the next 30 days, higher than 31% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • resources.enablesecurity.com https://resources.enablesecurity.com/resources/sipdigestleak-tut.pdf referenced PoC, tagged "exploit" by a source, unverified
  • voipsa.org http://voipsa.org/pipermail/voipsec_voipsa.org/2009-April/002946.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-916 Use of Password Hash With Insufficient Computational Effort

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.