CVE-2017-12616

CVE-2017-12616 is a high-severity vulnerability in Apache Tomcat with a CVSS 3.x base score of 7.5. Its EPSS exploit-prediction score of 71% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-200.

Key facts

• Severity: High (CVSS 3.x base score 7.5)
• CVSS v2: 5.0
• EPSS exploit prediction: 71% (99th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-200
• Affected product: Apache Tomcat
• Published: 2017-09-19
• Last modified: 2026-06-17

Description

When using a VirtualDirContext with Apache Tomcat 7.0.0 to 7.0.80 it was possible to bypass security constraints and/or view the source code of JSPs for resources served by the VirtualDirContext using a specially crafted request.

Frequently asked questions

What is CVE-2017-12616?

When using a VirtualDirContext with Apache Tomcat 7.0.0 to 7.0.80 it was possible to bypass security constraints and/or view the source code of JSPs for resources served by the VirtualDirContext using a specially crafted request.

How severe is CVE-2017-12616?

CVE-2017-12616 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2017-12616 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 71% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-12616?

CVE-2017-12616 primarily affects Apache Tomcat. In total, 82 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-12616?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2017-12616 published?

CVE-2017-12616 was published on 2017-09-19 and last updated on 2026-06-17.

References

• http://www.securityfocus.com/bid/100897
• http://www.securitytracker.com/id/1039393
• https://access.redhat.com/errata/RHSA-2018:0465
• https://access.redhat.com/errata/RHSA-2018:0466
• https://lists.apache.org/thread.html/1df9b4552464caa42047062fe7175da0da06c18ecc8daf99258bbda6%40%3Cannounce.tomcat.apache.org%3E
• https://lists.apache.org/thread.html/388a323769f1dff84c9ec905455aa73fbcb20338e3c7eb131457f708%40%3Cdev.tomcat.apache.org%3E
• https://lists.apache.org/thread.html/3d19773b4cf0377db62d1e9328bf9160bf1819f04f988315086931d7%40%3Cdev.tomcat.apache.org%3E
• https://lists.apache.org/thread.html/845312a10aabbe2c499fca94003881d2c79fc993d85f34c1f5c77424%40%3Cdev.tomcat.apache.org%3E
• https://lists.apache.org/thread.html/r9136ff5b13e4f1941360b5a309efee2c114a14855578c3a2cbe5d19c%40%3Cdev.tomcat.apache.org%3E
• https://lists.debian.org/debian-lts-announce/2018/06/msg00008.html
• https://security.netapp.com/advisory/ntap-20171018-0001/
• https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03828en_us
• https://usn.ubuntu.com/3665-1/
• https://www.synology.com/support/security/Synology_SA_17_54_Tomcat

Affected products (82)

• cpe:2.3:a:apache:tomcat:7.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.0:beta:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.2:beta:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.4:beta:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.5:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.5:beta:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.6:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.7:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.8:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.9:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.10:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.11:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.12:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.13:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.14:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.15:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.16:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.17:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.18:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.19:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.20:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.21:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.22:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.23:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.24:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.25:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.26:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.27:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.28:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.29:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.30:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.31:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.32:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.33:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.34:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.35:*:*:*:*:*:*:*

More vulnerabilities in Apache Tomcat

• CVE-2026-43512 — Critical (CVSS 9.8): DEPRECATED: Authentication Bypass Issues vulnerability in digest authentication in Apache Tomcat. This issue affects…
• CVE-2026-41293 — Critical (CVSS 9.8): Improper Input Validation vulnerability in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through…
• CVE-2025-31651 — Critical (CVSS 9.8): Improper Neutralization of Escape, Meta, or Control Sequences vulnerability in Apache Tomcat. For a subset of unlikely…
• CVE-2025-24813 — Critical (CVSS 9.8): Path Equivalence: 'file.Name' (Internal Dot) leading to Remote Code Execution and/or Information disclosure and/or…
• CVE-2024-56337 — Critical (CVSS 9.8): Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in Apache Tomcat. This issue affects Apache Tomcat:…
• CVE-2024-50379 — Critical (CVSS 9.8): Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability during JSP compilation in Apache Tomcat permits an RCE…

All CVEs affecting Apache Tomcat →

Other CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) vulnerabilities

• CVE-2026-27604 — Critical (CVSS 10.0): FOSSBilling is a free, open-source billing and client management system. Starting in version 0.5.4 and prior to version…
• CVE-2026-40965 — Critical (CVSS 10.0): Cloud Foundry UAA versions v76.12.0 through v78.12.0 are vulnerable to a private key exposure. The server contains a…
• CVE-2026-42826 — Critical (CVSS 10.0): Exposure of sensitive information to an unauthorized actor in Azure DevOps allows an unauthorized attacker to disclose…
• CVE-2025-29270 — Critical (CVSS 10.0): Incorrect access control in the realtime.cgi endpoint of Deep Sea Electronics devices DSE855 v1.1.0 to v1.1.26 allows…
• CVE-2025-61481 — Critical (CVSS 10.0): An issue in MikroTik RouterOS v.7.14.2 and SwOS v.2.18 exposes the WebFig management interface over cleartext HTTP by…
• CVE-2025-53624 — Critical (CVSS 10.0): The Docusaurus gists plugin adds a page to your Docusaurus instance, displaying all public gists of a GitHub user.…

Browse all CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) vulnerabilities →