CVE-2009-2521

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

82.27% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 99.6% of scored records. A rank, not a probability.

NVD base score

The NVD has published no score for this record

NVD CVSS vector

No NVD score to derive

NVD analysis status

Modified. NVD last modified this record on 2026-06-16.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2009-09-04 10:00Z17 YR AGO

Last updated

2024-08-07 05:52Z2 YR AGO

Reserved

2009-07-17

Assigning CNA

microsoft

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-400Uncontrolled Resource ConsumptionClass

Data version

5.1

Document digest

a31153055fa711b49e02e37039cf4acee25cf40a752949c1547cd6033d0655fd

• oval.cisecurity.orgoval:org.mitre.oval:def:6508https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6508vdb-entrysignaturex_refsource_OVAL
• support.microsoft.com975191http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ975191vendor-advisoryx_refsource_MSKB
• www.us-cert.govTA09-286Ahttp://www.us-cert.gov/cas/techalerts/TA09-286A.htmlthird-party-advisoryx_refsource_CERT
• docs.microsoft.comMS09-053https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-053vendor-advisoryx_refsource_MS
• archives.neohapsis.com20090903 Microsoft Internet Information Services 5.0/6.0 FTP SERVER DENIAL OF SERVICE ("Stack Exhaustion")http://archives.neohapsis.com/archives/fulldisclosure/2009-09/0040.htmlmailing-listx_refsource_FULLDISC