CVE-2009-20005

InterSystems Caché UtilConfigHome.csp Stack Buffer Overflow

A stack-based buffer overflow exists in the UtilConfigHome.csp endpoint of InterSystems Caché 2009.1. The vulnerability is triggered by sending a specially crafted HTTP GET request containing an oversized argument to the .csp handler. Due to insufficient bounds checking, the input overflows a stack buffer, allowing an attacker to overwrite control structures and execute arbitrary code. It is unknown if this vulnerability was patched and an affected version range remains undefined.

Affected

InterSystems Corporation · InterSystems Caché

CVSS v4.0 VULNCHECK

9.3 CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS

1.69% chance of exploitation in the next 30 days, 77th percentile

Published

2025-09-16

Updated

2026-05-15

Proof-of-concept exploits (2)

• https://www.exploit-db.com/exploits/16807
• https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/win…

Metasploit modules (1)

• rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/intersystems_cache…

References

• CVE Record
• NVD entry