CVE-2017-12149
Published: December 10, 2021
Official Description
The JBoss Application Server, shipped with Red Hat Enterprise Application Platform 5.2, allows an attacker to execute arbitrary code via crafted serialized data.
CISA KEV Advisory
Red Hat JBoss Application Server Remote Code Execution Vulnerability
The JBoss Application Server, shipped with Red Hat Enterprise Application Platform 5.2, allows an attacker to execute arbitrary code via crafted serialized data.
Apply updates per vendor instructions.
Risk Analysis
The JBoss Application Server, as shipped with Red Hat Enterprise Application Platform 5.2, is vulnerable to arbitrary code execution via crafted serialized data. The high EPSS score of 0.94294 indicates a very high likelihood of exploitation, making this a critical vulnerability.
This vulnerability is actively being exploited in the wild and is listed in CISA's KEV catalog. It is remotely exploitable.
Apply all available security updates for Red Hat Enterprise Application Platform 5.2 and JBoss Application Server. Ensure proper deserialization practices are followed and untrusted input is not deserialized.
Technical Analysis
CVE-2017-12149 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-2017-12149 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 (1)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2017-12149 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