CVE-2009-4055
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.
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
- 2.8% (87th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2009-4026)
- Published
- December 2, 2009
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2009-4026 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected 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
- 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
and 170 more…
References
- http://downloads.asterisk.org/pub/security/AST-2009-010-1.2.diff.txt(Exploit)
- http://downloads.asterisk.org/pub/security/AST-2009-010-1.4.diff.txt(Exploit)
- http://downloads.asterisk.org/pub/security/AST-2009-010-1.6.0.diff.txt(Exploit)
- http://downloads.asterisk.org/pub/security/AST-2009-010-1.6.1.diff.txt(Exploit)
- http://downloads.digium.com/pub/security/AST-2009-010.html(Vendor Advisory)
- http://secunia.com/advisories/37530(Exploit, Vendor Advisory)
- http://secunia.com/advisories/37677
- http://secunia.com/advisories/37708
- http://securitytracker.com/id?1023249
- http://www.debian.org/security/2009/dsa-1952
- http://www.osvdb.org/60569
- http://www.redhat.com/archives/fedora-package-announce/2009-December/msg00759.html
- http://www.securityfocus.com/archive/1/508147/100/0/threaded
- http://www.securityfocus.com/bid/37153
- http://www.vupen.com/english/advisories/2009/3368(Vendor Advisory)
- https://exchange.xforce.ibmcloud.com/vulnerabilities/54471
- https://issues.asterisk.org/view.php?id=16242
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
Query CVEs from your AI assistant
The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.
Add the CVE brain