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CVE-2009-3699

79
FAUCET Score

CVE-2009-3699 describes a critical stack-based buffer overflow in the libcsa.a library used by the calendar daemon (rpc.cmsd) in IBM AIX versions 5.x through 5.3.10, 6.x through 6.1.3, and VIOS 2.1 and earlier. This vulnerability carries a CVSS score of 10.0, indicating maximum severity with an easily exploitable network vector, low attack complexity, and complete compromise of confidentiality, integrity, and availability. Exploit code is publicly available via Metasploit, confirming its exploitability, though there is no evidence of active exploitation in the wild or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.1.0CPE matchmatch criteria
cpe:2.3:a:ibm:vios:*:*:*:*:*:*:*:*
1.4CPE matchmatch criteria
cpe:2.3:a:ibm:vios:1.4:*:*:*:*:*:*:*
1.5.0CPE matchmatch criteria
cpe:2.3:a:ibm:vios:1.5.0:*:*:*:*:*:*:*
1.5.1CPE matchmatch criteria
cpe:2.3:a:ibm:vios:1.5.1:*:*:*:*:*:*:*
1.5.2CPE matchmatch criteria
cpe:2.3:a:ibm:vios:1.5.2:*:*:*:*:*:*:*

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
62.09%
Probability of exploitation in next 30 days
EPSS Percentile
99.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
Metasploit: AIX Calendar Manager Service Daemon (rpc.cmsd) Opcode 21 Buffer Overflow · Oct 7, 2009
ExploitDB: EDB-16929 · Nov 11, 2010
This CVE's current EPSS score of 0.6209 is in the 98th percentile among its peer group of 51,553 CVEs.

Social Chatter

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

Remediation records are not available for this CVE.

References

aix.software.ibm.com / aix/efixes/security/cmsd_advisory.asc
Vendor Advisory
labs.idefense.com / intelligence/vulnerabilities/display.php
Patch
secunia.com / advisories/36978
Vendor Advisory
securitytracker.com / id
exchange.xforce.ibmcloud.com / vulnerabilities/53681
immunityinc.com / downloads/immpartners/aixcmsd10092009.tar.gz
ibm.com / support/docview.wss
ibm.com / support/docview.wss
ibm.com / support/docview.wss
ibm.com / support/docview.wss
ibm.com / support/docview.wss
ibm.com / support/docview.wss
ibm.com / support/docview.wss
ibm.com / support/docview.wss
Vendor Advisory
ibm.com / support/docview.wss
osvdb.org / 58726
securityfocus.com / bid/36615
ExploitPatch
vupen.com / english/advisories/2009/2846
PatchVendor Advisory