VulnerabilityModified

CVE-2008-4999

Nortel Networks UNIStim IP Phone 0604DAS allows remote attackers to cause a denial of service (crash) via a long ping packet ("ping of death").

EXPLOIT ✓HIGH 7.8EPSS 3.83%

Does this matter?

A public exploit is published in Exploit-DB (verified) and the impact is high, while EPSS rates exploitation at 3.8%. Anyone can run this; patch or mitigate before the next change window and check exposed instances for signs of use.

Description

Nortel Networks UNIStim IP Phone 0604DAS allows remote attackers to cause a denial of service (crash) via a long ping packet ("ping of death"). NOTE: this issue could not be reproduced by a third party, who tested it on 0604DAD. In addition, the original researcher was not able to reliably reproduce the issue.

CVSS 2.0: 7.8 HIGHAV:N/AC:L/Au:N/C:N/I:N/A:C
EPSS: 3.83% probability · 90th percentile
Public exploits: 1 in Exploit-DB · verified · first 26 February 2008
CISA KEV: Not listed
Weakness: CWE-20
Affected: nortel/unistim ip phone
Source: cve@mitre.org

EPSS trend

EPSS 3.8% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Public exploits (1)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-ID	Title	Type	Published	Verified
EDB-31306 source ↗	Nortel UNIStim IP Phone - Remote Ping Denial of Servicehardware · sipherr	dos	26 February 2008	yes

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.