CVE-2019-9082
Published: November 3, 2021
Official Description
ThinkPHP contains an unspecified vulnerability that allows for remote code execution via public//?s=index/\think\app/invokefunction&function=call_user_func_array&vars[0]=system&vars[1][]= followed by the command.
CISA KEV Advisory
ThinkPHP Remote Code Execution Vulnerability
ThinkPHP contains an unspecified vulnerability that allows for remote code execution via public//?s=index/\think\app/invokefunction&function=call_user_func_array&vars[0]=system&vars[1][]= followed by the command.
Apply updates per vendor instructions.
Risk Analysis
This unspecified vulnerability in ThinkPHP allows for remote code execution through a specific URL parameter manipulation. The very high EPSS score of 0.94255 indicates a significant likelihood of exploitation, and its presence in the KEV confirms it is actively exploited.
This vulnerability is actively exploited in the wild, meaning that functional exploits are publicly available and being used by threat actors. The flaw is remotely exploitable via a crafted URL.
Update ThinkPHP to a patched version. Implement input validation and sanitize all user-supplied data to prevent command injection and similar attacks.
Technical Analysis
CVE-2019-9082 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2019-9082 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Exploit & PoC Resources
All References (1)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2019-9082 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1