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
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.7%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
40
EG Risk 40/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation1% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.7%
EPSS %ILE
53rd
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

March 23, 2017

Last Modified

June 17, 2026

References (18)

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntutomcat8 (8.0.37-1ubuntu0.1) @ yakkety2026-05-22ubuntu

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.

Affected Packages

(4 across 2 ecosystems)
Debian:7(2)
PackageVulnerable rangeFix by version rangeDependents
tomcat66.0.35-6 ... 6.0.45-1~deb6u1 (16 versions)
  • every version up to 6.0.45+dfsg-1~deb7u4: fixed in 6.0.45+dfsg-1~deb7u4
—
tomcat77.0.28-4 ... 7.0.28-4+deb7u7 (8 versions)
  • every version up to 7.0.28-4+deb7u8: fixed in 7.0.28-4+deb7u8
—
Debian:8(2)
PackageVulnerable rangeFix by version rangeDependents
tomcat77.0.56-3 ... 7.0.56-3+deb8u5 (6 versions)
  • every version up to 7.0.56-3+deb8u6: fixed in 7.0.56-3+deb8u6
—
tomcat88.0.14-1, 8.0.14-1+deb8u1, 8.0.14-1+deb8u2, 8.0.14-1+deb8u3, 8.0.14-1+deb8u4
  • every version up to 8.0.14-1+deb8u5: fixed in 8.0.14-1+deb8u5
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

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.

Data Freshness Timeline

(refreshed 5× in last 7d / 24× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 155 total refreshes for this CVE.

  1. 2026-10-05 17:38 UTCEPSS rescore
  2. 2026-10-03 14:21 UTCEPSS rescore
  3. 2026-10-03 14:21 UTCEPSS rescore
  4. 2026-09-30 14:58 UTCEPSS rescore
  5. 2026-09-30 09:18 UTCEG score recompute
  6. 2026-09-28 13:45 UTCEPSS rescore
  7. 2026-09-27 13:40 UTCEPSS rescore
  8. 2026-09-26 15:53 UTCEPSS rescore
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  10. 2026-09-24 13:59 UTCEPSS rescore
  11. 2026-09-23 13:41 UTCEPSS rescore
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  13. 2026-09-19 15:35 UTCEPSS rescore
  14. 2026-09-18 19:22 UTCEPSS rescore
  15. 2026-09-18 14:06 UTCOSV refresh
  16. 2026-09-17 19:22 UTCEPSS rescore
  17. 2026-09-16 05:05 UTCEPSS rescore
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  19. 2026-09-13 16:41 UTCEPSS rescore
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  24. 2026-09-07 15:56 UTCEPSS rescore
  25. 2026-09-04 13:56 UTCEPSS rescore
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  1. 2026-09-02 14:07 UTCEPSS rescore
  2. 2026-09-01 13:48 UTCEPSS rescore
  3. 2026-09-01 03:31 UTCEPSS rescore
  4. 2026-08-30 16:21 UTCOSV refresh
  5. 2026-08-28 21:35 UTCEPSS rescore
  6. 2026-08-27 14:20 UTCEPSS rescore
  7. 2026-08-26 14:41 UTCEPSS rescore
  8. 2026-08-25 13:44 UTCEPSS rescore
  9. 2026-08-21 23:44 UTCEPSS rescore
  10. 2026-08-19 16:59 UTCEPSS rescore
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  14. 2026-08-16 02:10 UTCEPSS rescore
  15. 2026-08-15 01:25 UTCEPSS rescore
  16. 2026-08-14 04:19 UTCOSV refresh
  17. 2026-08-12 13:46 UTCEPSS rescore
  18. 2026-08-11 13:36 UTCEPSS rescore
  19. 2026-08-09 13:42 UTCEPSS rescore
  20. 2026-08-08 16:32 UTCEPSS rescore
  21. 2026-08-07 16:22 UTCEPSS rescore
  22. 2026-08-06 13:42 UTCEPSS rescore
  23. 2026-08-05 19:12 UTCEPSS rescore
  24. 2026-08-04 15:05 UTCEPSS rescore
  25. 2026-08-02 02:22 UTCEPSS rescore
  26. 2026-08-01 04:11 UTCEPSS rescore
  27. 2026-07-30 16:24 UTCEPSS rescore
  28. 2026-07-30 01:26 UTCEPSS rescore
  29. 2026-07-30 01:26 UTCEPSS rescore
  30. 2026-07-29 09:04 UTCOSV refresh
  31. 2026-07-28 15:31 UTCEPSS rescore
  32. 2026-07-26 14:50 UTCEPSS rescore
  33. 2026-07-25 14:13 UTCEPSS rescore
  34. 2026-07-24 14:13 UTCEPSS rescore
  35. 2026-07-23 14:15 UTCEPSS rescore
  36. 2026-07-23 01:24 UTCEG score recompute
  37. 2026-07-22 22:04 UTCEG score recompute
  38. 2026-07-22 14:04 UTCEPSS rescore
  39. 2026-07-21 15:21 UTCEPSS rescore
  40. 2026-07-21 15:21 UTCEPSS rescore
  41. 2026-07-20 17:04 UTCEPSS rescore
  42. 2026-07-19 14:28 UTCEPSS rescore
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  44. 2026-07-19 02:26 UTCEPSS rescore
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  46. 2026-07-18 10:00 UTCEPSS rescore
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  48. 2026-07-16 16:59 UTCEPSS rescore
  49. 2026-07-16 16:59 UTCEPSS rescore
  50. 2026-07-15 16:54 UTCEPSS rescore
  51. 2026-07-15 16:54 UTCEPSS rescore
  52. 2026-07-15 01:56 UTCEPSS rescore
  53. 2026-07-13 22:26 UTCEPSS rescore
  54. 2026-07-13 06:09 UTCEPSS rescore
  55. 2026-07-12 05:43 UTCEPSS rescore
  56. 2026-07-12 05:43 UTCEPSS rescore
  57. 2026-07-12 01:41 UTCOSV refresh
  58. 2026-07-11 08:24 UTCEPSS rescore
  59. 2026-07-09 19:06 UTCEPSS rescore
  60. 2026-07-08 15:10 UTCEPSS rescore
  61. 2026-07-07 13:42 UTCEPSS rescore
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  66. 2026-07-05 02:27 UTCEPSS rescore
  67. 2026-07-04 06:28 UTCEPSS rescore
  68. 2026-07-01 15:02 UTCEPSS rescore
  69. 2026-06-30 23:19 UTCEPSS rescore
  70. 2026-06-30 23:19 UTCEPSS rescore
  71. 2026-06-29 14:03 UTCEPSS rescore
  72. 2026-06-28 14:04 UTCEPSS rescore
  73. 2026-06-28 04:53 UTCEPSS rescore
  74. 2026-06-27 03:05 UTCEPSS rescore
  75. 2026-06-25 13:47 UTCEPSS rescore

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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 on March 23, 2017, with the most recent update on June 17, 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 0.7% probability of exploitation in the next 30 days (53rd percentile of EPSS-scored CVEs).
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?
A fix for CVE-2016-9774 is available: update to the fixed version the vendor names in its advisory.

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