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Fencer Vulns
medium 5.0

CVE-2009-4055 json

rtp.c in Asterisk Open Source 1.2.x before 1.2.37, 1.4.x before 1.4.27.1, 1.6.0.x before 1.6.0.19, and 1.6.1.x before 1.6.1.11; Business Ed…

published 2009-12-02 16 y ago modified 2026-06-16 4 mo ago also EUVD-2009-4026

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.8%
EPSS 2.8% chance of exploitation in 30 days, percentile 86%
public exploits
0
none known

Summary

rtp.c in Asterisk Open Source 1.2.x before 1.2.37, 1.4.x before 1.4.27.1, 1.6.0.x before 1.6.0.19, and 1.6.1.x before 1.6.1.11; Business Edition B.x.x before B.2.5.13, C.2.x.x before C.2.4.6, and C.3.x.x before C.3.2.3; and s800i 1.3.x before 1.3.0.6 allows remote attackers to cause a denial of service (daemon crash) via an RTP comfort noise payload with a long data length.

Patch / fix

  • asterisk Debian 14 1:1.6.2.0~rc7-1

debian advisories DEBIAN-CVE-2009-4055

Exploit prediction

2.83% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • downloads.asterisk.org http://downloads.asterisk.org/pub/security/AST-2009-010-1.4.diff.txt referenced PoC, tagged "exploit" by a source, unverified
  • downloads.asterisk.org http://downloads.asterisk.org/pub/security/AST-2009-010-1.6.0.diff.txt referenced PoC, tagged "exploit" by a source, unverified
  • secunia.com http://secunia.com/advisories/37530 referenced PoC, tagged "exploit" by a source, unverified
  • downloads.asterisk.org http://downloads.asterisk.org/pub/security/AST-2009-010-1.6.1.diff.txt referenced PoC, tagged "exploit" by a source, unverified
  • downloads.asterisk.org http://downloads.asterisk.org/pub/security/AST-2009-010-1.2.diff.txt referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

References

Sources

Fencer Vulns 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.