CVE-2017-6056

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2022-05-13. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 7%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

It was discovered that a programming error in the processing of HTTPS requests in the Apache Tomcat servlet and JSP engine may result in denial of service via an infinite loop. The denial of service is easily achievable as a consequence of backporting a CVE-2016-6816 fix but not backporting the fix for Tomcat bug 57544. Distributions affected by this backporting issue include Debian (before 7.0.56-3+deb8u8 and 8.0.14-1+deb8u7 in jessie) and Ubuntu.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
41(Track)
EG Risk 41/100SSVC: Track

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
Severity75% × 45%
Exploitation7% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
7%
EPSS %ILE
94%
KEV
Not listed

Published

February 17, 2017

Last Modified

June 17, 2026

References (34)

Vendor Advisories for CVE-2017-6056(5)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(6)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntutomcat7-user (7.0.52-1ubuntu0.10) @ trusty2026-05-22ubuntu
redhatweld-core-0:1.1.34-1.Final_redhat_1.1.ep6.el52017-03-22redhat
redhatweld-core-0:1.1.34-1.Final_redhat_1.1.ep6.el62017-03-22redhat
redhatjboss-ec2-eap-0:7.5.14-2.Final_redhat_2.ep6.el62017-03-22redhat
redhatweld-core-0:1.1.34-1.Final_redhat_1.1.ep6.el72017-03-22redhat
redhatpatch2017-03-14redhat

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

(3 across 2 ecosystems)
Debian:8(2)
PackageVulnerable rangeFixed inDependents
tomcat77.0.56-3 ... 7.0.56-3+deb8u7 (8 versions)7.0.56-3+deb8u8—
tomcat88.0.14-1 ... 8.0.14-1+deb8u6 (7 versions)8.0.14-1+deb8u7—
Debian:7(1)
PackageVulnerable rangeFixed inDependents
tomcat77.0.28-4 ... 7.0.28-4+deb7u9 (10 versions)7.0.28-4+deb7u10—

Weakness Classification(1)

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

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 6× in last 7d / 21× 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 128 total refreshes for this CVE.

  1. 2026-09-07 15:56 UTCEPSS rescore
  2. 2026-09-06 13:43 UTCEPSS rescore
  3. 2026-09-05 15:23 UTCEPSS rescore
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  1. 2026-08-02 02:23 UTCEPSS rescore
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  3. 2026-07-30 16:24 UTCEPSS rescore
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  5. 2026-07-28 15:32 UTCEPSS rescore
  6. 2026-07-26 14:51 UTCEPSS rescore
  7. 2026-07-23 14:15 UTCEPSS rescore
  8. 2026-07-23 01:30 UTCEG score recompute
  9. 2026-07-22 22:09 UTCEG score recompute
  10. 2026-07-22 14:04 UTCEPSS rescore
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  12. 2026-07-21 15:21 UTCEPSS rescore
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  14. 2026-07-20 17:04 UTCEPSS rescore
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  22. 2026-07-15 16:54 UTCEPSS rescore
  23. 2026-07-15 01:56 UTCEPSS rescore
  24. 2026-07-15 01:56 UTCEPSS rescore
  25. 2026-07-13 22:26 UTCEPSS rescore
  26. 2026-07-12 05:43 UTCEPSS rescore
  27. 2026-07-11 08:24 UTCEPSS rescore
  28. 2026-07-09 19:06 UTCEPSS rescore
  29. 2026-07-08 15:10 UTCEPSS rescore
  30. 2026-07-07 13:42 UTCEPSS rescore
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  39. 2026-06-30 23:19 UTCEPSS rescore
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  41. 2026-06-29 14:03 UTCEPSS rescore
  42. 2026-06-28 04:53 UTCEPSS rescore
  43. 2026-06-27 03:06 UTCEPSS rescore
  44. 2026-06-27 03:05 UTCEPSS rescore
  45. 2026-06-25 13:47 UTCEPSS rescore
  46. 2026-06-24 14:02 UTCEPSS rescore
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  48. 2026-06-23 21:30 UTCEPSS rescore
  49. 2026-06-22 14:23 UTCEPSS rescore
  50. 2026-06-22 14:23 UTCEPSS rescore
  51. 2026-06-21 01:57 UTCEPSS rescore
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  53. 2026-06-19 19:23 UTCEPSS rescore
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  55. 2026-06-18 17:50 UTCEPSS rescore
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  60. 2026-06-14 23:14 UTCEPSS rescore
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  67. 2026-06-07 15:22 UTCEPSS rescore
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  69. 2026-06-06 13:45 UTCEPSS rescore
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  73. 2026-06-02 20:11 UTCEPSS rescore
  74. 2026-06-02 20:11 UTCEPSS rescore
  75. 2026-06-01 13:49 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2017-6056?
CVE-2017-6056 is a high vulnerability published on February 17, 2017. It was discovered that a programming error in the processing of HTTPS requests in the Apache Tomcat servlet and JSP engine may result in denial of service via an infinite loop. The denial of service is easily achievable as a consequence of backporting a CVE-2016-6816 fix but not backporting the fix…
When was CVE-2017-6056 disclosed?
CVE-2017-6056 was first published in the National Vulnerability Database on February 17, 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-2017-6056 actively exploited?
CVE-2017-6056 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 7% probability of exploitation in the next 30 days, which ranks it in the top 5.9% of all scored CVEs.
What is the CVSS score of CVE-2017-6056?
CVE-2017-6056 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2017-6056?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-6056, 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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