CVE-2016-8735
Published: May 12, 2023
Official Description
Apache Tomcat contains an unspecified vulnerability that allows for remote code execution if JmxRemoteLifecycleListener is used and an attacker can reach Java Management Extension (JMX) ports. This CVE exists because this listener wasn't updated for consistency with the Oracle patched issues for CVE-2016-3427 which affected credential types.
CISA KEV Advisory
Apache Tomcat Remote Code Execution Vulnerability
Apache Tomcat contains an unspecified vulnerability that allows for remote code execution if JmxRemoteLifecycleListener is used and an attacker can reach Java Management Extension (JMX) ports. This CVE exists because this listener wasn't updated for consistency with the Oracle patched issues for CVE-2016-3427 which affected credential types.
Apply updates per vendor instructions.
Risk Analysis
Apache Tomcat is affected by a vulnerability that can lead to remote code execution if the JmxRemoteLifecycleListener is in use and JMX ports are accessible to an attacker. The very high EPSS score of 0.93668 signifies a strong probability of exploitation, demanding urgent action. This CVE is confirmed to be actively exploited, as indicated by its presence in the KEV.
This vulnerability is actively being exploited in the wild. Attackers can achieve remote code execution if they can reach the Java Management Extension (JMX) ports.
Update Apache Tomcat to a patched version. Ensure JMX ports are not exposed to untrusted networks and implement strong authentication for JMX access.
Technical Analysis
CVE-2016-8735 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-2016-8735 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.
Affected Vendors & Products
Exploit & PoC Resources
All References (2)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2016-8735 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