Apache Tomcat ↗
Summary iPlain-English security verdict for Apache Tomcat, generated from its current health score, actively-exploited vulnerabilities, and latest supported version.
Apache Tomcat currently scores 100/100 — healthy. 6 actively-exploited vulnerabilities (CISA KEV) affect older releases (e.g. CVE-2023-44487) — staying on the latest supported version keeps you clear of them. The latest supported release is 11.0.25. It's on the latest patch with no significant known issues — keep it current.
Disclosure trend iNew CVEs published for Apache Tomcat each year (NVD). A higher bar means more disclosures that year — more scrutiny, not necessarily less safe.
1 of its known vulnerability is linked to ransomware campaigns (CISA KEV).
Patch priority — what to act on iThe issues to fix first — actively exploited (CISA KEV) first, then by exploitation probability (EPSS), then severity. Each row's "→ fixed in" is the earliest version that patches it; "see advisory" means no fixed version is published.
Most urgent first — actively exploited, then likeliest to be exploited.
CVE-2023-44487 HIGH exploited Uncontrolled resource consumption EPSS 100% → see advisory CVE-2017-12617 HIGH exploited Unrestricted file upload EPSS 100% → fixed in 9.0.1 CVE-2017-12615 HIGH exploited ransomware Unrestricted file upload EPSS 100% → see advisory CVE-2020-1938 CRITICAL exploited EPSS 99% → fixed in 9.0.31 CVE-2016-8735 CRITICAL exploited EPSS 90% → fixed in 8.5.7 CVE-2026-34486 HIGH exploited CWE-311 EPSS 81% → see advisory CVE-2020-13935 HIGH CWE-835 EPSS 87% → see advisory CVE-2021-33037 MEDIUM CWE-444 EPSS 75% → see advisory CVE-2020-13934 HIGH CWE-401 EPSS 64% → see advisory CVE-2020-9484 HIGH Insecure deserialization EPSS 57% → fixed in 9.0.43 CVE-2026-65905 CRITICAL CWE-294 EPSS 1% → fixed in 11.0.25 CVE-2026-68525 CRITICAL Incorrect authorization EPSS 1% → fixed in 11.0.25Get alerted about Apache Tomcat
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Versions & lifecycle iWhen each release line stops receiving security patches (end-of-life). After EOL there are no more fixes — plan upgrades before these dates.
How long each Apache Tomcat release line is supported — and when it sunsets. Select a line for its full report.
Full Apache Tomcat end-of-life dates & support timeline →
11.0 latest 11.0.25 Supported 11.0.25 → 10.1 latest 10.1.59 Supported 10.1.59 → 10.0 latest 10.0.27 End of life ended 2022-10-3110.0.27 → 9.0 latest 9.0.121 Supported until 2027-03-319.0.121 → 8.5 latest 8.5.100 End of life ended 2024-03-318.5.100 → 8.0 latest 8.0.53 End of life ended 2018-06-308.0.53 → 7 latest 7.0.109 End of life ended 2021-03-317.0.109 → 6 latest 6.0.53 End of life ended 2016-12-316.0.53 → 5 latest 5.5.36 End of life ended 2012-09-305.5.36 → See all upcoming end-of-life dates →Frequently asked
Is Apache Tomcat safe and patched?
Apache Tomcat currently scores 100/100 — healthy. 6 actively-exploited vulnerabilities (CISA KEV) affect older releases (e.g. CVE-2023-44487) — staying on the latest supported version keeps you clear of them. The latest supported release is 11.0.25. It's on the latest patch with no significant known issues — keep it current.
What should I do about Apache Tomcat now?
Upgrade Apache Tomcat to the latest supported release (11.0.25) or later, which clears the actively-exploited issues affecting older versions, then confirm against Apache's official advisory.
When does Apache Tomcat reach end-of-life?
The latest supported Apache Tomcat release is 11.0.25. After end-of-life a release no longer receives security patches.
Which versions of Apache Tomcat are still receiving security updates?
Supported Apache Tomcat release lines (latest 11.0.25): 11.0, 10.1, 9.0. End-of-life releases no longer receive security patches.
Informational only, from public data (NVD · CISA KEV · EPSS · endoflife.date), and can lag or miss vendor-specific fixes. Always confirm against Apache's official advisory before you patch or upgrade — Apache Tomcat official site ↗