Is CVE-2017-12149 in the CISA KEV catalog?

Yes. CVE-2017-12149 is on the CISA Known Exploited Vulnerabilities list, added 2021-12-10, and has known ransomware campaign use.

What is the CVSS severity of CVE-2017-12149?

CVE-2017-12149 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2017-12149?

CVE-2017-12149 has an EPSS score of 90.71% (100th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2017-12149?

No published fix for CVE-2017-12149 has been found yet. It is on the CISA Known Exploited Vulnerabilities list; federal agencies must remediate by 2022-06-10. Apply the vendor's mitigations per CISA's guidance.

CVE & CISA-KEV Catalog

CVE-2017-12149

CRITICALCISA KEVEPSS 100th pctl

9.8

CVSS v3

NVD

Description

In Jboss Application Server as shipped with Red Hat Enterprise Application Platform 5.2, it was found that the doFilter method in the ReadOnlyAccessFilter of the HTTP Invoker does not restrict classes for which it performs deserialization and thus allowing an attacker to execute arbitrary code via crafted serialized data.

CWE-502Deserialization of Untrusted Data

How to fix

Actively exploited, no published fix found yet

CISA required action: Apply updates per vendor instructions.

Federal remediation due: 2022-06-10

Known ransomware campaign use

Mitigation guidance may be in the linked vendor advisories in the References section below.

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CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

90.71%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

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.

Remediation due: 2022-06-10

Associated with ransomware campaigns

References

Third-Party Advisory4

Government Resource1

cisa.gov

Issue Tracking1

bugzilla.redhat.com

Related Vulnerabilities

Other CWE-502 (Deserialization of Untrusted Data) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-0669	High	7.2	100%	KEV + Ransom	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-35464	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2023-29300	Critical	9.8	100%	KEV + Ransom	-
CVE-2025-53770	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2022-41082	High	8.0	100%	KEV + Ransom	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-21.