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.

Published: 2009-09-08 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-0627 is rated Moderate Risk (60/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.10%). EPSS rose +1.13% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2009-0627

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.97% 2.10% +1.13%
2 2026-05-18 0.31% 0.97% +0.65%
3 2025-09-05 — 0.31% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-0627

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 2.0 HIGH
AV:N/AC:L/Au:N/C:N/I:N/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 6.9 [email protected]

Weakness enumeration for CVE-2009-0627

Affected software / configurations for CVE-2009-0627

Vendor Product Version Raw CPE
cisco nx-os <= 4.0 cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*
cisco nexus_5000 — cpe:2.3:h:cisco:nexus_5000:*:*:*:*:*:*:*:*
cisco nexus_7000 — cpe:2.3:h:cisco:nexus_7000:*:*:*:*:*:*:*:*

References for CVE-2009-0627

cvelogic Threat Intelligence