Is CVE-2009-0839 in the CISA KEV catalog?

No. CVE-2009-0839 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2009-0839?

CVE-2009-0839 has a CVSS v2 base score of 10.0 (HIGH).

What is the EPSS score for CVE-2009-0839?

CVE-2009-0839 has an EPSS score of 9.01% (95th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2009-0839?

Upgrade mapserver on debian 11 to 5.2.2-1 or later.

CVE & CISA-KEV Catalog

CVE-2009-0839

HIGHEPSS 95th pctl

10.0

CVSS v2

NVD

Description

Stack-based buffer overflow in mapserv.c in mapserv in MapServer 4.x before 4.10.4 and 5.x before 5.2.2, when the server has a map with a long IMAGEPATH or NAME attribute, allows remote attackers to execute arbitrary code via a crafted id parameter in a query action.

CWE-119Buffer Overflow

How to fix

Remediation Available

mapserverDebian

Fixed in:5.2.2-1CVE-2009-0839

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

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

9.01%probability of exploitation in 30 days

95thpercentile

High risk: more likely to be exploited than 95% of all known CVEs.

References

Exploit1

positronsecurity.com

Vendor Advisory1

trac.osgeo.org

Other references9

Related Vulnerabilities

Other CWE-119 (Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-4966	Critical	9.4	100%	KEV + Ransom	Fix
CVE-2017-11882	High	7.8	100%	KEV + Ransom	-
CVE-2020-0796	Critical	10.0	100%	KEV + Ransom	-
CVE-2008-4250	Critical	9.8	99%	KEV	-
CVE-2017-15944	Critical	9.8	98%	KEV	Fix
CVE-2015-0014	High	10.0	97%	-	-

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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.