The postinst script in the tomcat6 package before 6.0.45+dfsg-1~deb7u4 on Debian wheezy, before 6.0.35-1ubuntu3.9 on Ubuntu 12.04 LTS and on Ubuntu 14.04 LTS; the tomcat7 package before 7.0.28-4+deb7u8 on Debian wheezy, before 7.0.56-3+deb8u6 on Debian jessie, before 7.0.52-1ubuntu0.8 on Ubuntu 14.04 LTS, and on Ubuntu 12.04 LTS, 16.04 LTS, and 16.10; and the tomcat8 package before 8.0.14-1+deb8u5 on Debian jessie, before 8.0.32-1ubuntu1.3 on Ubuntu 16.04 LTS, before 8.0.37-1ubuntu0.1 on Ubuntu 16.10, and before 8.0.38-2ubuntu1 on Ubuntu 17.04 might allow local users with access to the tomcat account to obtain sensitive information or gain root privileges via a symlink attack on the Catalina localhost directory.
CVE-2016-9774
HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence
Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-14. NVD baseline CVSS 7.8; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 7.8Exploit: NoneExposed: 0
A fix is available — apply it.
- CVSS v3
- 7.8
- EG Score
- 7.8(medium)
- EPSS
- 50.4%
- KEV
- Not listed
Published
March 23, 2017
Last Modified
May 13, 2026
References (18)
- secalert@redhathttp://www.debian.org/security/2016/dsa-3738
- secalert@redhathttp://www.debian.org/security/2016/dsa-3739
- secalert@redhathttp://www.openwall.com/lists/oss-security/2016/12/02/10
- secalert@redhathttp://www.openwall.com/lists/oss-security/2016/12/02/5
- secalert@redhathttp://www.securityfocus.com/bid/94643
- secalert@redhathttp://www.ubuntu.com/usn/USN-3177-1
- secalert@redhathttp://www.ubuntu.com/usn/USN-3177-2
- secalert@redhathttps://bugs.debian.org/cgi-bin/bugreport.cgi?bug=845393
- secalert@redhathttps://security.netapp.com/advisory/ntap-20180731-0002/
- af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2016/dsa-3738
- af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2016/dsa-3739
- af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2016/12/02/10
- af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2016/12/02/5
- af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/94643
- af854a3a-2127-422b-91ae-364da2661108http://www.ubuntu.com/usn/USN-3177-1
Patch Availability(1)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | tomcat8 (8.0.37-1ubuntu0.1) @ yakkety | 2026-05-22 | ubuntu |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
All Vendor Advisories
(1)
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
Frequently asked(5)
What is CVE-2016-9774?
CVE-2016-9774 is a high vulnerability published on March 23, 2017. The postinst script in the tomcat6 package before 6.0.45+dfsg-1~deb7u4 on Debian wheezy, before 6.0.35-1ubuntu3.9 on Ubuntu 12.04 LTS and on Ubuntu 14.04 LTS; the tomcat7 package before 7.0.28-4+deb7u8 on Debian wheezy, before 7.0.56-3+deb8u6 on Debian jessie, before 7.0.52-1ubuntu0.8 on Ubuntu…
When was CVE-2016-9774 disclosed?
CVE-2016-9774 was first published in the National Vulnerability Database on March 23, 2017, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2016-9774 actively exploited?
CVE-2016-9774 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 50.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2016-9774?
CVE-2016-9774 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2016-9774?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-9774, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
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