CVE-2008-6564
Nortel UNIStim protocol, as used in Communication Server 1000 and other products, uses...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2008-6564- CVSS 2.0
- 7.6 High
AV:N/AC:H/Au:N/C:C/I:C/A:C - Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2008-6564- Updated
- 2026-11-02
EUVDEUVD-2008-6527 No score
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.
- Record
EUVD-2008-6527- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-pv9m-5j84-gff3 No score
Nortel UNIStim protocol, as used in Communication Server 1000 and other products, uses...
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.
- Record
GHSA-pv9m-5j84-gff3- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2008-6564 is a high vulnerability (CVSS 7.6) in Nortel Communication Server 1000, published March 31, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.24%, the 82nd percentile. No source names a fixed version.
References
support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=713455
exchange.xforce.ibmcloud.com/vulnerabilities/41801
osvdb.org/44379
secunia.com/advisories/29747
voipshield.com/research-details.php?id=27&s=4&threats_details=&threats_category=0&threats_vendor=0&limit=20&sort=discovered&sortby=DESC
securityfocus.com/bid/28691
securitytracker.com/id?1019847
nvd.nist.gov/vuln/detail/CVE-2008-6564
github.com/advisories/GHSA-pv9m-5j84-gff3