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High Apache Tomcat CVEs with a working exploit

11 CVEs, 3 protected by Waratek

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Product: Tomcat✕
Overview 11 matches · 3 protected · 0 exploited · 0 CISA KEV · 6 EPSS ≥ 0.5
11matches 3protected27.3% 0exploited0.0% 0CISA KEV0.0% 6EPSS ≥ 0.554.5%
Protected by Waratek 3 27.3% Rule in development 0 0.0% Mitigation candidate 8 72.7% No exploit published 0 0.0%
Critical 0 0.0% High 11 100.0% Medium 0 0.0% Low 0 0.0% None 0 0.0% Unknown 0 0.0%
blocked by ARMR today 3 27.3% partly blocked 0 0.0% not blocked 8 72.7% not established 0 0.0% unrecorded 0 0.0%
Exploited 0 0.0% Working exploit published 11 100.0% Proof of concept only 0 0.0% Forecast only 0 0.0% No public exploit 0 0.0%
split by peak 2 / year
Mitigation candidate: 8Protected by Waratek: 3 High: 11 not blocked: 8blocked by ARMR today: 3 Working exploit published: 11
20022 Mitigation candidate2 High2 not blocked2 Working exploit published2 20030 20040 20050 20060 20070 20080 20091 Mitigation candidate1 High1 not blocked1 Working exploit published1 20100 20110 20120 20130 20141 Mitigation candidate1 High1 not blocked1 Working exploit published1 20150 20162 Mitigation candidate2 High2 not blocked2 Working exploit published2 20171 Protected by Waratek1 High1 blocked by ARMR today1 Working exploit published1 20180 20190 20202 Protected by Waratek1 Mitigation candidate1 High2 blocked by ARMR today1 not blocked1 Working exploit published2 20210 20221 Mitigation candidate1 High1 not blocked1 Working exploit published1 20230 20240 20251 Protected by Waratek1 High1 blocked by ARMR today1 Working exploit published1
200320052007200920112013201520172019202120232025
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CVE Severity Published▾ Status Exploitation Description
CVE-2025-31650 High 2025-04-28 Protected by Waratek Working exploit published Improper Input Validation vulnerability in Apache Tomcat. Incorrect error handling for some invalid HTTP priority headers resulted in incomplete clean-up of the failed request which created a memory leak. A large number of such requests could trigger an OutOfMemoryException resulting in a denial of service. This issue affects Apache Tomcat: from 9.0.76 through 9.0.102, from 10.1.10 through 10.1.39, from 11.0.0-M2 through 11.0.5. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.90 though 8.5.100. Users are recommended to upgrade to version 9.0.104, 10.1.40 or 11.0.6 which fix the issue.
CVE-2022-29885 High 2022-05-12 Mitigation candidate Working exploit published The documentation of Apache Tomcat 10.1.0-M1 to 10.1.0-M14, 10.0.0-M1 to 10.0.20, 9.0.13 to 9.0.62 and 8.5.38 to 8.5.78 for the EncryptInterceptor incorrectly stated it enabled Tomcat clustering to run over an untrusted network. This was not correct. While the EncryptInterceptor does provide confidentiality and integrity protection, it does not protect against all risks associated with running over any untrusted network, particularly DoS risks.
CVE-2020-13935 High 2020-07-14 Mitigation candidate Working exploit published The payload length in a WebSocket frame was not correctly validated in Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M1 to 9.0.36, 8.5.0 to 8.5.56 and 7.0.27 to 7.0.104. Invalid payload lengths could trigger an infinite loop. Multiple requests with invalid payload lengths could lead to a denial of service.
CVE-2020-9484 High 2020-05-20 Protected by Waratek Working exploit published When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter="null" (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by FileStore to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.
CVE-2016-6816 High 2017-03-20 Protected by Waratek Working exploit published The code in Apache Tomcat 9.0.0.M1 to 9.0.0.M11, 8.5.0 to 8.5.6, 8.0.0.RC1 to 8.0.38, 7.0.0 to 7.0.72, and 6.0.0 to 6.0.47 that parsed the HTTP request line permitted invalid characters. This could be exploited, in conjunction with a proxy that also permitted the invalid characters but with a different interpretation, to inject data into the HTTP response. By manipulating the HTTP response the attacker could poison a web-cache, perform an XSS attack and/or obtain sensitive information from requests other then their own.
CVE-2016-5425 High 2016-10-13 Mitigation candidate Working exploit published The Tomcat package on Red Hat Enterprise Linux (RHEL) 7, Fedora, CentOS, Oracle Linux, and possibly other Linux distributions uses weak permissions for /usr/lib/tmpfiles.d/tomcat.conf, which allows local users to gain root privileges by leveraging membership in the tomcat group.
CVE-2016-1240 High 2016-10-03 Mitigation candidate Working exploit published The Tomcat init script in the tomcat7 package before 7.0.56-3+deb8u4 and tomcat8 package before 8.0.14-1+deb8u3 on Debian jessie and the tomcat6 and libtomcat6-java packages before 6.0.35-1ubuntu3.8 on Ubuntu 12.04 LTS, the tomcat7 and libtomcat7-java packages before 7.0.52-1ubuntu0.7 on Ubuntu 14.04 LTS, and tomcat8 and libtomcat8-java packages before 8.0.32-1ubuntu1.2 on Ubuntu 16.04 LTS allows local users with access to the tomcat account to gain root privileges via a symlink attack on the Catalina log file, as demonstrated by /var/log/tomcat7/catalina.out.
CVE-2014-0050 High 2014-04-01 Mitigation candidate Working exploit published MultipartStream.java in Apache Commons FileUpload before 1.3.1, as used in Apache Tomcat, JBoss Web, and other products, allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a crafted Content-Type header that bypasses a loop's intended exit conditions.
CVE-2009-3548 High 2009-11-12 Mitigation candidate Working exploit published The Windows installer for Apache Tomcat 6.0.0 through 6.0.20, 5.5.0 through 5.5.28, and possibly earlier versions uses a blank default password for the administrative user, which allows remote attackers to gain privileges.
CVE-2002-2272 High 2002-12-31 Mitigation candidate Working exploit published Tomcat 4.0 through 4.1.12, using mod_jk 1.2.1 module on Apache 1.3 through 1.3.27, allows remote attackers to cause a denial of service (desynchronized communications) via an HTTP GET request with a Transfer-Encoding chunked field with invalid values.
CVE-2002-0682 High 2002-07-23 Mitigation candidate Working exploit published Cross-site scripting vulnerability in Apache Tomcat 4.0.3 allows remote attackers to execute script as other web users via script in a URL with the /servlet/ mapping, which does not filter the script when an exception is thrown by the servlet.