The Realm implementations in Apache Tomcat versions 9.0.0.M1 to 9.0.0.M9, 8.5.0 to 8.5.4, 8.0.0.RC1 to 8.0.36, 7.0.0 to 7.0.70 and 6.0.0 to
The Realm implementations in Apache Tomcat versions 9.0.0.M1 to 9.0.0.M9, 8.5.0 to 8.5.4, 8.0.0.RC1 to 8.0.36, 7.0.0 to 7.0.70 and 6.0.0 to 6.0.45 did not process the supplied password if the supplied user name did not exist. This made a timing attack possible to determine valid user names. Note that the default configuration includes the LockOutRealm which makes exploitation of this vulnerability harder.
Noroxi analysis
No Noroxi analysis for this record yet
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We use this product, ask for help- Published
- Aug 10, 2017
- Updated
- Jun 16, 2026
- EPSS
- 8.0% · 95th percentile
- CWE
- CWE-203
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Report tools
Action score
25
Monitor
Low priority for now.
- CVSS
- 23 / 40 · 5.9 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 2 / 30 · 8.0%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| apache | tomcat | cpe:2.3:a:apache:tomcat |
| canonical | ubuntu linux | cpe:2.3:o:canonical:ubuntu_linux |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
| redhat | jboss enterprise web server | cpe:2.3:a:redhat:jboss_enterprise_web_server |
| redhat | enterprise linux desktop | cpe:2.3:o:redhat:enterprise_linux_desktop |
| redhat | enterprise linux eus | cpe:2.3:o:redhat:enterprise_linux_eus |
| redhat | enterprise linux server | cpe:2.3:o:redhat:enterprise_linux_server |
| redhat | enterprise linux server aus | cpe:2.3:o:redhat:enterprise_linux_server_aus |
| redhat | enterprise linux server tus | cpe:2.3:o:redhat:enterprise_linux_server_tus |
| redhat | enterprise linux workstation | cpe:2.3:o:redhat:enterprise_linux_workstation |
| netapp | oncommand insight | cpe:2.3:a:netapp:oncommand_insight |
| netapp | oncommand shift | cpe:2.3:a:netapp:oncommand_shift |
and 3 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- apache tomcat6.0.0 and later · up to 6.0.45 inclusive
- apache tomcat7.0.0 and later · up to 7.0.70 inclusive
- apache tomcat8.0 and later · up to 8.0.36 inclusive
- apache tomcat8.5.0 and later · up to 8.5.4 inclusive
- apache tomcat9.0.0
- canonical ubuntu linux16.04
- debian debian linux8.0
- netapp oncommand insightall versions
- netapp oncommand shiftall versions
- netapp snap creator frameworkall versions
- oracle communications diameter signaling router8.0.0 and later · up to 8.5.0 inclusive
- oracle tekelec platform distribution7.4.0 and later · up to 7.7.1 inclusive
- redhat enterprise linux desktop7.0
- redhat enterprise linux eus7.4
- redhat enterprise linux eus7.5
- redhat enterprise linux eus7.6
- redhat enterprise linux eus7.7
- redhat enterprise linux server7.0
- redhat enterprise linux server aus7.4
- redhat enterprise linux server aus7.6
Versions reported by the vendor
Affected version ranges reported by the assigning authority (apache). Independent of NVD's CPE analysis and usually ahead of it.
Apache Software Foundation Apache Tomcat
- 9.0.0.M1 to 9.0.0.M9, 8.5.0 to 8.5.4, 8.0.0.RC1 to 8.0.36, 7.0.0 to 7.0.70, 6.0.0 to 6.0.45affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:7 | tomcat6 | before 6.0.45+dfsg-1~deb7u3 | 6.0.45+dfsg-1~deb7u3 |
| Debian:7 | tomcat7 | before 7.0.28-4+deb7u7 | 7.0.28-4+deb7u7 |
| Debian:8 | tomcat7 | before 7.0.56-3+deb8u5 | 7.0.56-3+deb8u5 |
| Debian:8 | tomcat8 | before 8.0.14-1+deb8u4 | 8.0.14-1+deb8u4 |
| Maven | org.apache.tomcat:tomcat | from 6.0.0 · before 6.0.46 | 6.0.46 |
| Maven | org.apache.tomcat:tomcat | from 7.0.0 · before 7.0.72 | 7.0.72 |
| Maven | org.apache.tomcat:tomcat | from 8.0.0.RC1 · before 8.0.37 | 8.0.37 |
| Maven | org.apache.tomcat:tomcat | from 8.5.0 · before 8.5.5 | 8.5.5 |
| Maven | org.apache.tomcat:tomcat | from 9.0.0M1 · before 9.0.0.M10 | 9.0.0.M10 |
| Red Hat:enterprise_linux:7::client | tomcat | before 0:7.0.76-2.el7 | 0:7.0.76-2.el7 |
| Red Hat:enterprise_linux:7::client | tomcat-admin-webapps | before 0:7.0.76-2.el7 | 0:7.0.76-2.el7 |
| Red Hat:enterprise_linux:7::client | tomcat-docs-webapp | before 0:7.0.76-2.el7 | 0:7.0.76-2.el7 |
| Red Hat:enterprise_linux:7::client | tomcat-el-2.2-api | before 0:7.0.76-2.el7 | 0:7.0.76-2.el7 |
| Red Hat:enterprise_linux:7::client | tomcat-javadoc | before 0:7.0.76-2.el7 | 0:7.0.76-2.el7 |
| Red Hat:enterprise_linux:7::client | tomcat-jsp-2.2-api | before 0:7.0.76-2.el7 | 0:7.0.76-2.el7 |
| Red Hat:enterprise_linux:7::client | tomcat-jsvc | before 0:7.0.76-2.el7 | 0:7.0.76-2.el7 |
| Red Hat:enterprise_linux:7::client | tomcat-lib | before 0:7.0.76-2.el7 | 0:7.0.76-2.el7 |
| Red Hat:enterprise_linux:7::client | tomcat-servlet-3.0-api | before 0:7.0.76-2.el7 | 0:7.0.76-2.el7 |
| Red Hat:enterprise_linux:7::client | tomcat-webapps | before 0:7.0.76-2.el7 | 0:7.0.76-2.el7 |
| Red Hat:jboss_enterprise_web_server:3.1::el6 | hibernate4-c3p0-eap6 | before 0:4.2.23-1.Final_redhat_1.1.ep6.el6 | 0:4.2.23-1.Final_redhat_1.1.ep6.el6 |
| Red Hat:jboss_enterprise_web_server:3.1::el6 | hibernate4-core-eap6 | before 0:4.2.23-1.Final_redhat_1.1.ep6.el6 | 0:4.2.23-1.Final_redhat_1.1.ep6.el6 |
| Red Hat:jboss_enterprise_web_server:3.1::el6 | hibernate4-eap6 | before 0:4.2.23-1.Final_redhat_1.1.ep6.el6 | 0:4.2.23-1.Final_redhat_1.1.ep6.el6 |
| Red Hat:jboss_enterprise_web_server:3.1::el6 | hibernate4-entitymanager-eap6 | before 0:4.2.23-1.Final_redhat_1.1.ep6.el6 | 0:4.2.23-1.Final_redhat_1.1.ep6.el6 |
| Red Hat:jboss_enterprise_web_server:3.1::el6 | hibernate4-envers-eap6 | before 0:4.2.23-1.Final_redhat_1.1.ep6.el6 | 0:4.2.23-1.Final_redhat_1.1.ep6.el6 |
+77
Same product
apache: all recordsOther highest-scoring records for the same primary product.
- CVE-2025-24813Apache Tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUTKEV99Now
- CVE-2016-8735Remote code execution is possible with Apache Tomcat before 6.0.48, 7.x before 7.0.73, 8.x before 8.0.39, 8.5.x before 8.5.7, and 9.x beforeKEV96Now
- CVE-2017-12617When running Apache Tomcat versions 9.0.0.M1 to 9.0.0, 8.5.0 to 8.5.22, 8.0.0.RC1 to 8.0.46 and 7.0.0 to 7.0.81 with HTTP PUTs enabled (e.g.KEV92Now
- CVE-2017-12615When running Apache Tomcat 7.0.0 to 7.0.79 on Windows with HTTP PUTs enabled (e.g.KEV92Now
- CVE-2026-34486Apache Tomcat: Fix for CVE-2026-29146 allowed bypass of EncryptInterceptorKEV62This week
- CVE-2019-0232When running on Windows with enableCmdLineArguments enabled, the CGI Servlet in Apache Tomcat 9.0.0.M1 to 9.0.17, 8.5.0 to 8.5.39 and 7.0.0 62This week
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:tomcat6 | 6.0.45+dfsg-1~deb7u3 · Debian:7 | Package registry (OSV) |
| debian:tomcat7 | 7.0.28-4+deb7u7 · Debian:7 | Package registry (OSV) |
| debian:tomcat8 | 8.0.14-1+deb8u4 · Debian:8 | Package registry (OSV) |
| Maven:org.apache.tomcat:tomcat | 6.0.46 | Package registry (OSV) |
| Maven:org.apache.tomcat:tomcat | 7.0.72 | Package registry (OSV) |
| Maven:org.apache.tomcat:tomcat | 8.0.37 | Package registry (OSV) |
| Maven:org.apache.tomcat:tomcat | 8.5.5 | Package registry (OSV) |
| Maven:org.apache.tomcat:tomcat | 9.0.0.M10 | Package registry (OSV) |
| red hat:hibernate4-c3p0-eap6 | 0:4.2.23-1.Final_redhat_1.1.ep6.el6 · Red Hat:jboss_enterprise_web_server:3.1::el6 | Package registry (OSV) |
| red hat:hibernate4-core-eap6 | 0:4.2.23-1.Final_redhat_1.1.ep6.el6 · Red Hat:jboss_enterprise_web_server:3.1::el6 | Package registry (OSV) |
| red hat:hibernate4-eap6 | 0:4.2.23-1.Final_redhat_1.1.ep6.el6 · Red Hat:jboss_enterprise_web_server:3.1::el6 | Package registry (OSV) |
| red hat:hibernate4-entitymanager-eap6 | 0:4.2.23-1.Final_redhat_1.1.ep6.el6 · Red Hat:jboss_enterprise_web_server:3.1::el6 | Package registry (OSV) |
| red hat:hibernate4-envers-eap6 | 0:4.2.23-1.Final_redhat_1.1.ep6.el6 · Red Hat:jboss_enterprise_web_server:3.1::el6 | Package registry (OSV) |
| red hat:jbcs-httpd24-apache-commons-daemon | 0:1.0.15-1.redhat_2.1.jbcs.el6 · Red Hat:jboss_enterprise_web_server:3.1::el6 | Package registry (OSV) |
| red hat:jbcs-httpd24-apache-commons-daemon-jsvc | 1:1.0.15-17.redhat_2.jbcs.el6 · Red Hat:jboss_enterprise_web_server:3.1::el6 | Package registry (OSV) |
| red hat:jbcs-httpd24-apache-commons-daemon-jsvc-debuginfo | 1:1.0.15-17.redhat_2.jbcs.el6 · Red Hat:jboss_enterprise_web_server:3.1::el6 | Package registry (OSV) |
| red hat:jbcs-httpd24-runtime | 0:1-3.jbcs.el6 · Red Hat:jboss_enterprise_web_server:3.1::el6 | Package registry (OSV) |
| red hat:mod_cluster | 0:1.3.5-2.Final_redhat_2.1.ep7.el6 · Red Hat:jboss_enterprise_web_server:3.1::el6 | Package registry (OSV) |
| red hat:mod_cluster-tomcat7 | 0:1.3.5-2.Final_redhat_2.1.ep7.el6 · Red Hat:jboss_enterprise_web_server:3.1::el6 | Package registry (OSV) |
| red hat:mod_cluster-tomcat8 | 0:1.3.5-2.Final_redhat_2.1.ep7.el6 · Red Hat:jboss_enterprise_web_server:3.1::el6 | Package registry (OSV) |
| suse:tomcat | 8.0.32-10.13.2 · SUSE:Linux Enterprise Server 12 SP1 | Package registry (OSV) |
| suse:tomcat6 | 6.0.53-0.56.1 · SUSE:Linux Enterprise Point of Sale 11 SP3 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- high · data can be read
- Integrity
- none
- Availability
- none
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-203 · Observable DiscrepancyCVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- rhn.redhat.com/errata/RHSA-2017-0457.html
- www.debian.org/security/2016/dsa-3720
- www.securityfocus.com/bid/93939
- www.securitytracker.com/id/1037144
- access.redhat.com/errata/RHSA-2017:0455
- access.redhat.com/errata/RHSA-2017:0456
- access.redhat.com/errata/RHSA-2017:2247
- lists.apache.org/thread.html/1872f96bad43647832bdd84a408794cd06d9cbb557af63085ca10009%40%3Cannounce.tomcat.apache.org%3E
- lists.apache.org/thread.html/343558d982879bf88ec20dbf707f8c11255f8e219e81d45c4f8d0551%40%3Cdev.tomcat.apache.org%3E
- lists.apache.org/thread.html/37220405a377c0182d2afdbc36461c4783b2930fbeae3a17f1333113%40%3Cdev.tomcat.apache.org%3E
- lists.apache.org/thread.html/388a323769f1dff84c9ec905455aa73fbcb20338e3c7eb131457f708%40%3Cdev.tomcat.apache.org%3E
- lists.apache.org/thread.html/39ae1f0bd5867c15755a6f959b271ade1aea04ccdc3b2e639dcd903b%40%3Cdev.tomcat.apache.org%3E
- lists.apache.org/thread.html/3d19773b4cf0377db62d1e9328bf9160bf1819f04f988315086931d7%40%3Cdev.tomcat.apache.org%3E
- lists.apache.org/thread.html/845312a10aabbe2c499fca94003881d2c79fc993d85f34c1f5c77424%40%3Cdev.tomcat.apache.org%3E
- lists.apache.org/thread.html/b5e3f51d28cd5d9b1809f56594f2cf63dcd6a90429e16ea9f83bbedc%40%3Cdev.tomcat.apache.org%3E
- lists.apache.org/thread.html/b84ad1258a89de5c9c853c7f2d3ad77e5b8b2930be9e132d5cef6b95%40%3Cdev.tomcat.apache.org%3E
- lists.apache.org/thread.html/b8a1bf18155b552dcf9a928ba808cbadad84c236d85eab3033662cfb%40%3Cdev.tomcat.apache.org%3E
- lists.apache.org/thread.html/r03c597a64de790ba42c167efacfa23300c3d6c9fe589ab87fe02859c%40%3Cdev.tomcat.apache.org%3E
- lists.apache.org/thread.html/r587e50b86c1a96ee301f751d50294072d142fd6dc08a8987ae9f3a9b%40%3Cdev.tomcat.apache.org%3E
- lists.apache.org/thread.html/r9136ff5b13e4f1941360b5a309efee2c114a14855578c3a2cbe5d19c%40%3Cdev.tomcat.apache.org%3E
Vendor advisories and official records. Exploit/PoC links are deliberately left out.