CVE-2009-3699
Stack-based buffer overflow in libcsa.a (aka the calendar daemon library) in IBM AIX 5.x through 5.3.10 and 6.x through 6.1.3, and VIOS…
- 10.0HighCVSS base score
- 62.3%Exploitation in 30 daysEPSS · top 0.8% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 2Public exploitsMetasploit, Nuclei and Exploit-DB
Description
Stack-based buffer overflow in libcsa.a (aka the calendar daemon library) in IBM AIX 5.x through 5.3.10 and 6.x through 6.1.3, and VIOS 2.1 and earlier, allows remote attackers to execute arbitrary code via a long XDR string in the first argument to procedure 21 of rpc.cmsd.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list a Metasploit module and an Exploit-DB entry for it.
Show the exploits2
Metasploit modules1 module
- AIX Calendar Manager Service Daemon (rpc.cmsd) Opcode 21 Buffer Overflow (Metasploit module) (opens in a new tab)
exploit/aix/rpc_cmsd_opcode21Rank greatdisclosed 7 Oct 2009
Exploit-DB1 entry
- AIX Calendar Manager Service Daemon (rpc.cmsd) Opcode 21 - Buffer Overflow (Metasploit) (Exploit-DB entry) (opens in a new tab)
EDB-ID 16929dos, aixpublished 11 Nov 2010Verified
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By mitre
- 1 day later
· 1 day later
Published
- 15 years later
· 15 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High10.0 | AV:N/AC:L/Au:N/C:C/I:C/A:C |
- EPSS (exploitation in 30 days)
- 62.3% · top 0.8% of all CVEs (10 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 10.0.
Affected products
n/a
- affected n/a
References
18
- ADV-2009-2846 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- IZ62237 (opens in a new tab)vendor-advisoryx_refsource_AIXAPARx_transferred
- IZ62570 (opens in a new tab)vendor-advisoryx_refsource_AIXAPARx_transferred
- IZ61628 (opens in a new tab)vendor-advisoryx_refsource_AIXAPARx_transferred
- 1022996 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- 20091007 IBM AIX rpc.cmsd Stack Buffer Overflow Vulnerability (opens in a new tab)third-party-advisoryx_refsource_IDEFENSEx_transferred
- http://aix.software.ibm.com/aix/efixes/security/cmsd_advisory.asc (opens in a new tab)x_refsource_CONFIRMx_transferred
- IZ62569 (opens in a new tab)vendor-advisoryx_refsource_AIXAPARx_transferred
- ibm-aix-rpccmsd-bo(53681) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- IZ62571 (opens in a new tab)vendor-advisoryx_refsource_AIXAPARx_transferred
- IZ62123 (opens in a new tab)vendor-advisoryx_refsource_AIXAPARx_transferred
- IZ62672 (opens in a new tab)vendor-advisoryx_refsource_AIXAPARx_transferred
- IZ62572 (opens in a new tab)vendor-advisoryx_refsource_AIXAPARx_transferred
- 36978 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- IZ61717 (opens in a new tab)vendor-advisoryx_refsource_AIXAPARx_transferred
- https://www.immunityinc.com/downloads/immpartners/aixcmsd10092009.tar.gz (opens in a new tab)x_refsource_MISCx_transferred
- 58726 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- 36615 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2009-3672 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2009-3699)Record last updated .