Apache Tomcat und Tomcat Native: Mehrere Schwachstellen
WID-SEC-2026-1038 · first 10.04.2026 · updated 08.10.2026 · CVSS 7,3
What it is about
Apache Tomcat ist ein Web-Applikationsserver für verschiedene Plattformen. Ein Angreifer kann mehrere Schwachstellen in Apache Tomcat ausnutzen, um Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren, vertrauliche Informationen offenzulegen, Open-Redirect-Angriffe durchzuführen und andere, nicht näher spezifizierte Angriffe auszuführen.
Under what conditions?
The BSI does not name any particular preconditions. Exploitable remotely according to the BSI.
What can happen in the worst case
An attacker could use the vulnerability to
- Sicherheitsmaßnahmen zu umgehen
- Daten zu manipulieren
- vertrauliche Informationen offenzulegen
- Open-Redirect-Angriffe durchzuführen, andere, nicht näher spezifizierte Angriffe auszuführen
Am I affected?
Affected according to the BSI:
- Debian Linux
- Amazon Linux 2
- IBM Power Hardware Management Console
- Red Hat Enterprise Linux
- SUSE Linux
- Oracle Linux
- IBM QRadar SIEM
- SUSE openSUSE
- IBM Spectrum Protect Plus
- Apache Tomcat <11.0.20
- Apache Tomcat <10.1.52
- Apache Tomcat <9.0.116
and 10 more
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Apache Tomcat 11.0.20
- Apache Tomcat 10.1.52
- Apache Tomcat 9.0.116
- Apache Tomcat 10.1.53
- Apache Tomcat Native 1.3.7
- Apache Tomcat Native 2.0.14
- Apache Tomcat 11.0.19
- Apache Tomcat 11.0.21
- Apache Tomcat 10.1.54
- Apache Tomcat 9.0.117
- Red Hat JBoss Web Server 6.2.3
Is the vulnerability already being exploited?
- CVE-2026-34486: exploited in the wild according to CISA, in the catalogue since 04.08.2026.
Information and sources
- Original BSI advisory (WID)
- Oracle Linux Security Advisory ELSA-2026-18916 vom 2026-06-29 linux.oracle.com
- Apache Tomcat 9 vulnerabilities vom 2026-04-09 tomcat.apache.org
- Apache Tomcat 10 vulnerabilities vom 2026-04-09 tomcat.apache.org
- Apache Tomcat 11 vulnerabilities vom 2026-04-09 tomcat.apache.org
- openSUSE Security Update OPENSUSE-SU-2026:10548-1 vom 2026-04-15 lists.opensuse.org
- openSUSE Security Update OPENSUSE-SU-2026:10549-1 vom 2026-04-15 lists.opensuse.org
- openSUSE Security Update OPENSUSE-SU-2026:10547-1 vom 2026-04-15 lists.opensuse.org
- SUSE Security Update SUSE-SU-2026:1558-1 vom 2026-04-23 lists.suse.com
- openSUSE Security Update OPENSUSE-SU-2026:20612-1 vom 2026-04-23 lists.opensuse.org
- openSUSE Security Update OPENSUSE-SU-2026:20611-1 vom 2026-04-23 lists.opensuse.org
- SUSE Security Update SUSE-SU-2026:1572-1 vom 2026-04-23 lists.suse.com
- SUSE Security Update SUSE-SU-2026:1603-1 vom 2026-04-24 lists.suse.com
- SUSE Security Update SUSE-SU-2026:1604-1 vom 2026-04-24 lists.suse.com
- SUSE Security Update SUSE-SU-2026:21378-1 vom 2026-04-28 lists.suse.com
- SUSE Security Update SUSE-SU-2026:21379-1 vom 2026-04-28 lists.suse.com
- SUSE Security Update SUSE-SU-2026:21366-1 vom 2026-04-28 lists.suse.com
- Amazon Linux Security Advisory ALAS2TOMCAT9-2026-025 vom 2026-04-30 alas.aws.amazon.com
- Red Hat Security Advisory RHSA-2026:12195 vom 2026-04-30 access.redhat.com
- Red Hat Security Advisory RHSA-2026:12194 vom 2026-04-30 access.redhat.com
- HCL Security Bulletin vom 2026-05-12 support.hcl-software.com
- IBM Security Bulletin 7278738 vom 2026-07-01 www.ibm.com
- Red Hat Security Advisory RHSA-2026:20405 vom 2026-05-26 access.redhat.com
- Red Hat Security Advisory RHSA-2026:20406 vom 2026-05-26 access.redhat.com
- PoC CVE-2026-34486 vom 2026-05-28 github.com
- Debian Security Advisory DLA-4619 vom 2026-06-07 lists.debian.org
and 47 more sources in the original advisory
CVE: CVE-2026-24880, CVE-2026-25854, CVE-2026-29129, CVE-2026-29145, CVE-2026-29146, CVE-2026-32990, CVE-2026-34483, CVE-2026-34486, CVE-2026-34487, CVE-2026-34500
Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.