CVE-2012-10039

ZEN Load Balancer versions 2.0 and 3.0-rc1 contain a command injection vulnerability in content2-2.cgi. The filelog parameter is passed directly into a backtick-delimited exec() call without sanitation. An authenticated attacker can inject arbitrary shell commands, resulting in remote code execution as the root user. ZEN Load Balancer is the predecessor of ZEVENET and SKUDONET. The affected versions (2.0 and 3.0-rc1) are no longer supported. SKUDONET CE is the current community-maintained successor.

CVSS v4.0

9.4 CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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

2.39% chance of exploitation in the next 30 days, 83th percentile

Published

2025-08-11

Updated

2026-04-07

Proof-of-concept exploits (2)

• https://web.archive.org/web/20221203195056/https://itsecuritysolutions.org/2012-09-21-ZEN…
• https://www.exploit-db.com/exploits/21849

Metasploit modules (1)

• rapid7/metasploit-framework/blob/master/modules/exploits/linux/http/zen_load_balancer_exe…

References

• CVE Record
• NVD entry

Related

• CVE-2012-10038
• CVE-2012-10040
• CVE-2012-10037
• CVE-2012-10041
• CVE-2012-10036
• CVE-2012-10042