Is CVE-2009-2699 in the CISA KEV catalog?

No. CVE-2009-2699 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2009-2699?

CVE-2009-2699 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2009-2699?

CVE-2009-2699 has an EPSS score of 14.17% (96th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2009-2699?

Upgrade httpd to 2.2.14 or later.

CVE & CISA-KEV Catalog

CVE-2009-2699

HIGHEPSS 96th pctl

7.5

CVSS v3

NVD

Description

The Solaris pollset feature in the Event Port backend in poll/unix/port.c in the Apache Portable Runtime (APR) library before 1.3.9, as used in the Apache HTTP Server before 2.2.14 and other products, does not properly handle errors, which allows remote attackers to cause a denial of service (daemon hang) via unspecified HTTP requests, related to the prefork and event MPMs.

CWE-667

How to fix

Remediation Available

httpdWindows application

Affected:2.2.0 2.2.14Fixed in:2.2.14Apache Lounge

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

14.17%probability of exploitation in 30 days

96thpercentile

Very high risk: more likely to be exploited than 96% of all known CVEs.

References

Patch13

Vendor Advisory2

Third-Party Advisory4

Other references1

mandriva.com

Related Vulnerabilities

Other CWE-667 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-10072	High	7.5	73%	-	Fix
CVE-2002-1850	High	7.5	15%	-	Fix
CVE-2004-0174	High	7.5	12%	-	-
CVE-2009-4272	High	7.5	11%	-	-
CVE-2020-24606	High	8.6	5.2%	-	Fix
CVE-2018-0228	High	8.6	3.6%	-	Fix

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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.