CVE-2007-5591

Severity: high (CVSS 7.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2007-10-19 · updated 2026-06-16

Description

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.

Affected products

Nortel Meridian Option 11C: all versions
Nortel Meridian Option 51C: all versions
Nortel Meridian Option 61C: all versions
Nortel Meridian Option 81C: all versions
Nortel Voip-Core-Cs: 1000e, 1000m, 1000s

References

http://osvdb.org/41799
http://secunia.com/advisories/27282
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
http://www116.nortel.com/pub/repository/CLARIFY/DOCUMENT/2007/42/022871-01.pdf
https://exchange.xforce.ibmcloud.com/vulnerabilities/37252
http://osvdb.org/41799
http://secunia.com/advisories/27282
http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=655204

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