Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2009-0839

28
FAUCET Score

CVE-2009-0839 describes a stack-based buffer overflow vulnerability in MapServer versions 4.x before 4.10.4 and 5.x before 5.2.2. This flaw allows remote attackers to execute arbitrary code by sending a crafted 'id' parameter in a query action, specifically when the server's map configuration includes a long IMAGEPATH or NAME attribute. With a CVSS score of 10.0, this vulnerability is critical, requiring no authentication and having a low attack complexity, leading to complete compromise of confidentiality, integrity, and availability. Despite its severity, there is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
4.2.0CPE matchmatch criteria
cpe:2.3:a:osgeo:mapserver:4.2.0:beta1:*:*:*:*:*:*
4.4.0CPE matchmatch criteria
cpe:2.3:a:osgeo:mapserver:4.4.0:*:*:*:*:*:*:*
4.4.0CPE matchmatch criteria
cpe:2.3:a:osgeo:mapserver:4.4.0:beta1:*:*:*:*:*:*
4.4.0CPE matchmatch criteria
cpe:2.3:a:osgeo:mapserver:4.4.0:beta2:*:*:*:*:*:*
4.4.0CPE matchmatch criteria
cpe:2.3:a:osgeo:mapserver:4.4.0:beta3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

AV:N/AC:L/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
9.01%
Probability of exploitation in next 30 days
EPSS Percentile
94.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0901 is in the 91st percentile among its peer group of 51,485 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2009-0839

mapserver: multiple security fixes in 5.2.2 and 4.10.4 (CVE-2009-0839, CVE-2009-0840, CVE-2009-0841, CVE-2009-0842, CVE-2009-0843, CVE-2009-1176, CVE-2009-1177)

References

lists.osgeo.org / pipermail/mapserver-users/2009-March/060600.html
secunia.com / advisories/34520
secunia.com / advisories/34603
redhat.com / archives/fedora-package-announce/2009-April/msg00147.html
redhat.com / archives/fedora-package-announce/2009-April/msg00170.html
trac.osgeo.org / mapserver/ticket/2944
Vendor Advisory
debian.org / security/2009/dsa-1914
positronsecurity.com / advisories/2009-000.html
Exploit
securityfocus.com / archive/1/502271/100/0/threaded
securityfocus.com / bid/34306
securitytracker.com / id