How severe is CVE-2008-6577?

CVE-2008-6577 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2008-6577 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-6577?

CVE-2008-6577 affects Nortel Cs1000. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2008-6577?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2008-6577 published?

CVE-2008-6577 was published on 2009-04-01 and last updated on 2026-06-16.

CVE-2008-6577

CVE-2008-6577 is a critical-severity vulnerability in Nortel Cs1000 with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-255.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-255
Affected product: Nortel Cs1000
Published: 2009-04-01
Last modified: 2026-06-16

Description

Nortel MG1000S, Signaling Server, and Call Server on the Communications Server 1000 (CS1K) 4.50.x contain multiple unspecified hard-coded accounts and passwords, which allows remote attackers to gain privileges.

Frequently asked questions

What is CVE-2008-6577?: Nortel MG1000S, Signaling Server, and Call Server on the Communications Server 1000 (CS1K) 4.50.x contain multiple unspecified hard-coded accounts and passwords, which allows remote attackers to gain privileges.
How severe is CVE-2008-6577?: CVE-2008-6577 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2008-6577 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-6577?: CVE-2008-6577 affects Nortel Cs1000. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2008-6577?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2008-6577 published?: CVE-2008-6577 was published on 2009-04-01 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:h:nortel:cs1000:4.50:*:*:*:*:*:*:*

More vulnerabilities in Nortel Cs1000

CVE-2008-6578 — Critical (CVSS 10.0): Multiple unspecified vulnerabilities in Nortel Communication Server 1000 4.50.x allow remote attackers to execute…
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