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CVE-2009-2281

27
FAUCET Score

CVE-2009-2281 describes multiple heap-based buffer underflows in the readPostBody function of MapServer versions 4.x through 4.10.4 and 5.x before 5.4.2. This vulnerability, stemming from an integer overflow, allows remote attackers to execute arbitrary code via a crafted Content-Length HTTP header or a large HTTP request. With a CVSS score of 10.0, it is critically severe, requiring no authentication and having a low attack complexity, leading to complete compromise of confidentiality, integrity, and availability. Despite its high severity and EPSS score, there is no evidence of active exploitation, public 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
5.95%
Probability of exploitation in next 30 days
EPSS Percentile
92.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0595 is in the 87th percentile among its peer group of 51,466 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-2009-2281

mapserver: incomplete upstream fix for CVE-2009-0840

References

security.debian.org / pool/updates/main/m/mapserver/mapserver_4.10.0-5.1+etch4.diff.gz
Patch
security.debian.org / pool/updates/main/m/mapserver/mapserver_5.0.3-3+lenny4.diff.gz
Patch
trac.osgeo.org / mapserver/browser/tags/rel-5-4-2/mapserver/HISTORY.TXT
trac.osgeo.org / mapserver/ticket/2943
debian.org / security/2009/dsa-1914
openwall.com / lists/oss-security/2009/07/01/1
openwall.com / lists/oss-security/2009/07/01/6