Red Hat Security Advisory: Red Hat JBoss Web Server 6.1.2 release and security update
Affects Red HatSource GCVE Database
Mentioned vulnerabilities
Not known to be exploited · CVSS 7.5 High : upgrade Red Hat to 6.1.2 soon.
Data as of 26 Oct 2026, 17:16 UTC
- EPSS
- 3.6% chance of exploitation in 30 days – higher than 89% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 6.1.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 13 Aug 2025
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 26 Oct 2026.
What to do
Upgrade Red Hat to 6.1.2.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat Product Security Red Hat | Affected
| Fixed in
|
AI-suggested
Red Hat has released Red Hat JBoss Web Server 6.1.2 which includes fixes for these denial of service vulnerabilities. Users should apply this update to affected systems running versions >=6.1.0 and <6.1.2 on RHEL 8, 9, or 10. Before applying this update, ensure all previously released errata relevant to your system have been applied. Follow Red Hat's official update instructions at https://access.redhat.com/articles/11258. No additional mitigation is indicated or required beyond applying the official update.
Description
Red Hat JBoss Web Server 6.1.2 addresses two denial of service (DoS) vulnerabilities in Apache Tomcat components. These include a general Apache Tomcat DoS (CVE-2025-52520) and a specific HTTP/2 "MadeYouReset" DoS attack via HTTP/2 control frames (CVE-2025-48989). The update replaces version 6.1.1 and is rated as having an Important security impact by Red Hat. The vulnerabilities affect Red Hat JBoss Web Server 6.1.0 up to but not including 6.1.2 on Red Hat Enterprise Linux 8, 9, and 10. The advisory recommends applying the 6.1.2 update to remediate these issues.
References
- access.redhat.com/errata/RHSA-2025:13685 (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- docs.redhat.com/en/documentation/red_hat_jboss_web_server/6.1/html/red_hat_jboss_web_server_6.1_service_pack_2_release_notes/index (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2373309 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2379374 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_13685.json (opens in a new tab)