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
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
- 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:LExploitation evidence
Disclosed: evidence found.
CVE published 7 Jan 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| Red HatRed Hat build of Apache Camel 4.14.4 for Spring Boot 3.5.11 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 7.4.24 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 9 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.0 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 8 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.0 for RHEL 9 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.1.3 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 | Affected– | Fixed in– |
| Red HatRed Hat Single Sign-On 7.6.13 | Affected– | Fixed in– |
| Red HatRed Hat Single Sign-On 7.6 for RHEL 7 | Affected– | Fixed in– |
| Red HatRed Hat Single Sign-On 7.6 for RHEL 8 | Affected– | Fixed in– |
| Red HatRed Hat Single Sign-On 7.6 for RHEL 9 | Affected– | Fixed in– |
| Red HatRHEL-8 based Middleware Containers | Affected– | Fixed in– |
| Red HatRed Hat build of Apache Camel - HawtIO 4 | Affected– | Fixed in– |
| Red HatRed Hat Data Grid 8 | Affected– | Fixed in– |
| Red HatRed Hat Enterprise Linux 10 | Affected– | Fixed in– |
| Red HatRed Hat Enterprise Linux 8 | Affected– | Fixed in– |
| Red HatRed Hat Enterprise Linux 9 | Affected– | Fixed in– |
| Red HatRed Hat Fuse 7 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform 7 | Affected– | Fixed in– |
| Red HatRed Hat JBoss Enterprise Application Platform Expansion Pack | Affected– | Fixed in– |
| Red HatRed Hat Process Automation 7 | Affected– | Fixed in– |
Mavenorg.apache.camel/camel-undertowpkg:maven/org.apache.camel/camel-undertowOther threats | Affected
| Fixed in
|
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
- access.redhat.com/errata/RHSA-2026:0383 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:0384 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:0386 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:33371 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:33372 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:3889 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:3890 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:3891 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:3892 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:4915 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:4916 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:4917 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:4924 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2025-12543 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2408784 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-12543.json (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:76132 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:76134 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:76129 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:76130 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:76128 (opens in a new tab)