Is CVE-2009-2526 in the CISA KEV catalog?

No. CVE-2009-2526 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2009-2526?

CVE-2009-2526 has a CVSS v2 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2009-2526?

CVE-2009-2526 has an EPSS score of 81.89% (100th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2009-2526

HIGHEPSS 100th pctl

7.8

CVSS v2

NVD

Description

Microsoft Windows Vista Gold, SP1, and SP2 and Server 2008 Gold and SP2 do not properly validate fields in SMBv2 packets, which allows remote attackers to cause a denial of service (infinite loop and system hang) via a crafted packet to the Server service, aka "SMBv2 Infinite Loop Vulnerability."

CWE-399

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

81.89%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-23.