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CVE-2008-6577

27
FAUCET Score

CVE-2008-6577 describes a critical vulnerability in Nortel MG1000S, Signaling Server, and Call Server components of Communications Server 1000 (CS1K) 4.50.x. The vulnerability stems from multiple hard-coded accounts and passwords, allowing unauthenticated remote attackers to gain full administrative privileges. With a CVSS score of 10.0, this flaw presents a severe risk due to its network-based attack vector, low attack complexity, and complete compromise of confidentiality, integrity, and availability. Despite its high severity, there is no known active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
4.50CPE matchmatch criteria
cpe:2.3:h:nortel:cs1000:4.50:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

AV:N/AC:L/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.65%
Probability of exploitation in next 30 days
EPSS Percentile
84.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0265 is in the 72nd percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

osvdb.org / 44374
secunia.com / advisories/29747
securitytracker.com / id
exchange.xforce.ibmcloud.com / vulnerabilities/41802
support.nortel.com / go/main.jsp
Vendor Advisory
securityfocus.com / bid/28691
voipshield.com / research-details.php