Is CVE-2009-2651 in the CISA KEV catalog?

No. CVE-2009-2651 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2009-2651?

CVE-2009-2651 has a CVSS v2 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2009-2651?

CVE-2009-2651 has an EPSS score of 2.27% (81th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2009-2651?

Upgrade asterisk on debian 11 to 1:1.6.2.0~dfsg~rc1-1 or later.

CVE & CISA-KEV Catalog

CVE-2009-2651

MEDIUMEPSS 81th pctl

5.0

CVSS v2

NVD

Description

main/rtp.c in Asterisk Open Source 1.6.1 before 1.6.1.2 allows remote attackers to cause a denial of service (crash) via an RTP text frame without a certain delimiter, which triggers a NULL pointer dereference and the subsequent calculation of an invalid pointer.

CWE-399Resource Management Errors

How to fix

Remediation Available

asteriskDebian

Fixed in:1:1.6.2.0~dfsg~rc1-1CVE-2009-2651

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

2.27%probability of exploitation in 30 days

81stpercentile

Elevated risk: more likely to be exploited than 81% of all known CVEs.

References

Patch1

vupen.com

Exploit1

downloads.digium.com

Vendor Advisory2

Other references4

Related Vulnerabilities

Other CWE-399 (Resource Management Errors) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2009-3103	High	10.0	90%	-	-
CVE-2009-0075	High	9.3	85%	-	-
CVE-2005-1790	Low	2.6	83%	-	-
CVE-2010-0806	High	8.8	82%	KEV	-
CVE-2009-2526	High	7.8	82%	-	-
CVE-2015-1868	High	7.8	82%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-23.