SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

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 2.1 and earlier, allows remote attackers to execute arbitrary code via a long XDR string in the first argument to…

EXPLOIT ✓HIGH 10.0EPSS 62.3%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 62.3%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.

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.

CVSS 2.0
10.0 HIGHAV:N/AC:L/Au:N/C:C/I:C/A:C
EPSS
62.34% probability · 99th percentile
Public exploits
1 in Exploit-DB · verified · first 11 November 2010
CISA KEV
Not listed
Weakness
CWE-119
Affected
ibm/vios · ibm/aix
Source
cve@mitre.org
EPSS trend
0%33%65%26 October 2026: 62.34%26 October 202626 October 2026

EPSS 62.3% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Public exploits (1)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-IDTitleTypePublishedVerified
EDB-16929source ↗AIX Calendar Manager Service Daemon (rpc.cmsd) Opcode 21 - Buffer Overflow (Metasploit)aix · Metasploitdos11 November 2010yes

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.