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CVE-2011-2665

MEDIUM · CVSS 5.0EPSS 4.0%EU EUVD

reqresp_parser.c in the SIP channel driver in Asterisk Open Source 1.8.x before 1.8.4.3 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a SIP packet with a Contact header that lacks a < (less than) character.

Key facts

CVSS score
5.0 (v2.0)
Severity
MEDIUM
CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
EPSS score
4.0% (91th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2011-2648)
Published
July 6, 2011
NVD last modified
June 16, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-2648 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

  • digium / asterisk
  • digium / asterisk
  • digium / asterisk
  • digium / asterisk
  • digium / asterisk
  • digium / asterisk
  • digium / asterisk
  • digium / asterisk
  • digium / asterisk
  • digium / asterisk
  • digium / asterisk
  • digium / asterisk
  • digium / asterisk
  • digium / asterisk
  • digium / asterisk
  • digium / asterisk
  • digium / asterisk
  • digium / asterisk
  • digium / asterisk
  • digium / asterisk
  • digium / asterisk
  • digium / asterisk
  • digium / asterisk
  • digium / asterisk
  • digium / asterisk
  • digium / asterisk
  • digium / asterisk
  • digium / asterisk
  • digium / asterisk
  • digium / asterisk
  • digium / asterisk
  • digium / asterisk

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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