Unrated severityNVD Advisory· Published Mar 31, 2009· Updated Apr 23, 2026

CVE-2008-6564

Description

Nortel UNIStim protocol, as used in Communication Server 1000 and other products, uses predictable sequence numbers, which allows remote attackers to hijack sessions via sniffing or brute force attacks.

Affected products

Nortel/Communication Server 1000
cpe:2.3:a:nortel:communication_server_1000:*:*:*:*:*:*:*:*
Nortel/Unistim Protocol
cpe:2.3:h:nortel:unistim_protocol:*:*:*:*:*:*:*:*

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

support.nortel.com/go/main.jspnvdVendor Advisory
osvdb.org/44379nvd
secunia.com/advisories/29747nvd
www.securityfocus.com/bid/28691nvd
www.securitytracker.com/idnvd
www.voipshield.com/research-details.phpnvd
exchange.xforce.ibmcloud.com/vulnerabilities/41801nvd

News mentions

No linked articles in our index yet.

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epss	0.002
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kev	0.000
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ransomware	0.000