# CVE-2017-12149: Red Hat JBoss Application Server Remote Code Execution Vulnerability

Source: https://junglewise.ai/threats/cve-2017-12149-red-hat-jboss-application-server-remote-code-execution  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2021-12-10. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2017-12149 · Severity: critical · CVSS 9.8 · Exploited in the wild · Published 2021-12-10

The doFilter method in the ReadOnlyAccessFilter of the HTTP Invoker in Red Hat JBoss Application Server does not restrict classes during deserialization. This allows unauthenticated remote attackers to execute arbitrary code via crafted serialized data.

Vendors: [Red Hat](https://junglewise.ai/threats/vendors/red-hat).

## Quick answers

**Is CVE-2017-12149 exploited in the wild?** Yes. CVE-2017-12149 is known to be exploited in the wild, first recorded on 10 December 2021. Treat it as urgent.

**How severe is CVE-2017-12149?** Critical severity, with a CVSS score of 9.8, published 10 December 2021.

**Which products and versions are affected?** Red Hat JBoss Application Server 5.2.0, 5.2.1, 5.2.2; Red Hat Enterprise Application Platform 5.0.0, 5.0.1, 5.1.0, 5.1.1, 5.1.2, 5.2.0, 5.2.1, 5.2.2.

**Is there a fix for CVE-2017-12149?** A patch was published on 2018-05-19: Red Hat errata RHSA-2018:1607 and RHSA-2018:1608 released. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2017-12149 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2017-12149?** Check whether you run Red Hat JBoss Application Server. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Red Hat JBoss Application Server 5.2.0, 5.2.1, 5.2.2
- Red Hat Enterprise Application Platform 5.0.0, 5.0.1, 5.1.0, 5.1.1, 5.1.2, 5.2.0, 5.2.1, 5.2.2

## Timeline

- 2017-08-30: disclosed: Date based on Red Hat Bugzilla ID 1486220 creation or related BID 100591
- 2018-05-19: patched: Red Hat errata RHSA-2018:1607 and RHSA-2018:1608 released.
- 2021-12-10: kev added: Added to CISA Known Exploited Vulnerabilities Catalog.