$ cve CVE-2007-4459 JSON

CVE-2007-4459 EXPLOIT

7.1

HIGH · CVSS 2.0 · EPSS 14% (pctl 96)

Patch early

A public exploit exists.

Description

Cisco IP Phone 7940 and 7960 with P0S3-08-6-00 firmware, and other SIP firmware before 8.7(0), allows remote attackers to cause a denial of service (device reboot) via (1) a certain sequence of 10 invalid SIP INVITE and OPTIONS messages; or (2) a certain invalid SIP INVITE message that contains a remote tag, followed by a certain set of two related SIP OPTIONS messages.

Scoring

CVSS	7.1 (HIGH, v2.0)
Vector	AV:N/AC:M/Au:N/C:N/I:N/A:C
EPSS	13.99% — more likely to be exploited than 96% of all CVEs
Weakness	CWE-20
On CISA KEV	no
Public exploit	yes
Published	2007-08-21
Last modified	2026-06-16

Affected (2)

Vendor	Product
cisco	voip phone cp-7940
cisco	voip phone cp-7960

Public exploits

Source	Title	Date
exploit-db	Cisco IP Phone 7940 - 3 SIP Messages Remote Denial of Service	2007-08-21
exploit-db	Cisco IP Phone 7940 - 10 SIP Messages Remote Denial of Service	2007-08-21

References

→ the Explorer · watch your stack · NVD