CVE-2007-5591
HIGH · CVSS 7.8EPSS 2.3%EU EUVD
The CS1000 signaling server in Nortel Enterprise VoIP-Core-CS 1000M Chassis/Cabinet, Enterprise VoIP-Core-CS 1000E and 1000S, Meridian-Core-Option 11C Chassis and Cabinet, and Meridian-Core-Option 51C, 61C, and 81C allows remote attackers to cause a denial of service (telephony application outage) via a flood of packets to Embedded LAN (ELAN) ports.
Key facts
- CVSS score
- 7.8 (v2.0)
- Severity
- HIGH
- CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:C- EPSS score
- 2.3% (83th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2007-5566)
- Published
- October 19, 2007
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2007-5566 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- nortel / communications server
- nortel / communications server
- nortel / communications server
- nortel / meridian option 11c
- nortel / meridian option 51c
- nortel / meridian option 61c
- nortel / meridian option 81c
- nortel / voip-core-cs
- nortel / voip-core-cs
- nortel / voip-core-cs
References
- http://osvdb.org/41799
- http://secunia.com/advisories/27282(Vendor Advisory)
- http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=655204
- http://www.csnc.ch/static/advisory/csnc/nortel_telephony_server_denial_of_service_v1.0.txt
- http://www.securityfocus.com/archive/1/482484/100/0/threaded
- http://www.securityfocus.com/bid/26113
- http://www.vupen.com/english/advisories/2007/3536(Vendor Advisory)
- http://www116.nortel.com/pub/repository/CLARIFY/DOCUMENT/2007/42/022871-01.pdf
- https://exchange.xforce.ibmcloud.com/vulnerabilities/37252
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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