How severe is CVE-2009-0627?

CVE-2009-0627 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2009-0627 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-0627?

CVE-2009-0627 primarily affects Cisco Nx-os. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-0627?

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

When was CVE-2009-0627 published?

CVE-2009-0627 was published on 2009-09-08 and last updated on 2026-06-16.

CVE-2009-0627

CVE-2009-0627 is a high-severity vulnerability in Cisco Nx-os with a CVSS 2.0 base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Cisco Nx-os
Published: 2009-09-08
Last modified: 2026-06-16

Description

Unspecified vulnerability in Cisco NX-OS before 4.0(1a)N2(1), when running on Nexus 5000 platforms, allows remote attackers to cause a denial of service (crash) via an unspecified "sequence of TCP packets" related to "TCP State manipulation," possibly related to separate attacks against CVE-2008-4609.

Frequently asked questions

What is CVE-2009-0627?: Unspecified vulnerability in Cisco NX-OS before 4.0(1a)N2(1), when running on Nexus 5000 platforms, allows remote attackers to cause a denial of service (crash) via an unspecified "sequence of TCP packets" related to "TCP State manipulation," possibly related to separate attacks against CVE-2008-4609.
How severe is CVE-2009-0627?: CVE-2009-0627 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2009-0627 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-0627?: CVE-2009-0627 primarily affects Cisco Nx-os. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-0627?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2009-0627 published?: CVE-2009-0627 was published on 2009-09-08 and last updated on 2026-06-16.

References

Affected products (3)

cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_5000:*:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_7000:*:*:*:*:*:*:*:*

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