Known exploited · Apache
CVE-2016-8735: Apache Tomcat Remote Code Execution Vulnerability
What it is
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.
- Vendor
- Apache
- Product
- Tomcat
- Added to KEV
- May 12, 2023
- CISA due date
- June 2, 2023
- Ransomware use
- Unknown
- Weakness
- CWE-284: Improper Access Control
What CISA requires
Apply updates per vendor instructions.
Forensic triage
No
What to do now
- Find every instance of Tomcat you run, including the forgotten ones, and check its version against the vendor advisory.
- Apply the vendor's fix or mitigation, before June 2, 2023 if you are bound by CISA's deadline, sooner if it faces the internet.
- Assume it was tried against you already: look for signs of exploitation from the date it was added, not from the day you patched.
References
H2 Security
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Start freeSource: CISA Known Exploited Vulnerabilities Catalog (public domain), catalog version 2026.10.01.