$ cve CVE-2007-3763 JSON

CVE-2007-3763 EXPLOIT

5.0

MEDIUM · CVSS 2.0 · EPSS 26.6% (pctl 98)

Patch early

A public exploit exists.

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.

Scoring

CVSS	5.0 (MEDIUM, v2.0)
Vector	AV:N/AC:L/Au:N/C:N/I:N/A:P
EPSS	26.56% — more likely to be exploited than 98% of all CVEs
On CISA KEV	no
Public exploit	yes
Published	2007-07-18
Last modified	2026-06-16

Affected (4)

Vendor	Product
asterisk	asterisk
asterisk	asterisk appliance developer kit
asterisk	asterisknow
asterisk	s800i appliance

Public exploits

Source	Title	Date
exploit-db	Asterisk < 1.2.22/1.4.8 - IAX2 Channel Driver Remote Crash	2007-07-31

References

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