Is CVE-2007-3763 in the CISA KEV catalog?

No. CVE-2007-3763 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2007-3763?

CVE-2007-3763 has a CVSS v2 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2007-3763?

CVE-2007-3763 has an EPSS score of 26.56% (98th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2007-3763

MEDIUMEPSS 98th pctl

5.0

CVSS v2

NVD

Description

The IAX2 channel driver (chan_iax2) in Asterisk before 1.2.22 and 1.4.x before 1.4.8, Business Edition before B.2.2.1, AsteriskNOW before beta7, Appliance Developer Kit before 0.5.0, and s800i before 1.0.2 allows remote attackers to cause a denial of service (crash) via a crafted (1) LAGRQ or (2) LAGRP frame that contains information elements of IAX frames, which results in a NULL pointer dereference when Asterisk does not properly set an associated variable.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

26.56%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% of all known CVEs.

References

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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.