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CVE-2025-12543VulnerabilityPublished Updated

CVE-2025-12543: Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7 · Improper Input Validation

Affects Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7Source CVE Database V5

0

Not known to be exploited · CVSS 9.6 Critical : upgrade to 8.1.3 as a priority.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score
9.6Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
1.3% chance of exploitation in 30 days – higher than 70% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 8.1.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 7 Jan 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.

What to do

Upgrade org.apache.camel/camel-undertow to 8.1.3.

Affected software

ProductAffectedFixed in
Red HatRed Hat build of Apache Camel 4.14.4 for Spring Boot 3.5.11Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 7.4.24Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.0Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 8Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 8Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 8Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 8Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 8Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 8Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 9Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 9Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 9Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 9Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 9Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 9Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.1.3Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 8Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 8Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 8Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 8Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 8Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 8Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 8Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 8Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 8Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 8Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 8Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 8Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9Affected–Fixed in–
Red HatRed Hat Single Sign-On 7.6.13Affected–Fixed in–
Red HatRed Hat Single Sign-On 7.6 for RHEL 7Affected–Fixed in–
Red HatRed Hat Single Sign-On 7.6 for RHEL 8Affected–Fixed in–
Red HatRed Hat Single Sign-On 7.6 for RHEL 9Affected–Fixed in–
Red HatRHEL-8 based Middleware ContainersAffected–Fixed in–
Red HatRed Hat build of Apache Camel - HawtIO 4Affected–Fixed in–
Red HatRed Hat Data Grid 8Affected–Fixed in–
Red HatRed Hat Enterprise Linux 10Affected–Fixed in–
Red HatRed Hat Enterprise Linux 8Affected–Fixed in–
Red HatRed Hat Enterprise Linux 9Affected–Fixed in–
Red HatRed Hat Fuse 7Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform 7Affected–Fixed in–
Red HatRed Hat JBoss Enterprise Application Platform Expansion PackAffected–Fixed in–
Red HatRed Hat Process Automation 7Affected–Fixed in–
Mavenorg.apache.camel/camel-undertowpkg:maven/org.apache.camel/camel-undertowOther threatsAffected
  • <8.1.3 >=8.1.0
Fixed in
  • 8.1.3

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Red Hat has released official security updates in Red Hat JBoss Enterprise Application Platform 8.1.3 for Red Hat Enterprise Linux 8 and 9 that fix this vulnerability by upgrading the Undertow component. Users should apply these updates promptly after ensuring all prior errata are applied and backing up their systems. Detailed update instructions are available from Red Hat. No other mitigation is indicated by the vendor advisory.

Description

A flaw was found in the Undertow HTTP server core, which is used in WildFly, JBoss EAP, and other Java applications. The Undertow library fails to properly validate the Host header in incoming HTTP requests.As a result, requests containing malformed or malicious Host headers are processed without rejection, enabling attackers to poison caches, perform internal network scans, or hijack user sessions.

References

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