CVE-2016-8747

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 7.2%, top 6% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 7%CVSS: 7.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

An information disclosure issue was discovered in Apache Tomcat 8.5.7 to 8.5.9 and 9.0.0.M11 to 9.0.0.M15 in reverse-proxy configurations. Http11InputBuffer.java allows remote attackers to read data that was intended to be associated with a different request.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
52(Track)
EG Risk 52/100SSVC: 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%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
93.6%
KEV
Not listed

Published

March 14, 2017

Last Modified

April 16, 2026

References (24)

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFixed inDependents
org.apache.tomcat:tomcat9.0.0.M11, 9.0.0.M13, 9.0.0.M159.0.0.M16—

Data Freshness Timeline

(refreshed 14× in last 7d / 42× 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.

  1. 2026-07-23 01:24 UTCEG score recompute
  2. 2026-07-22 22:04 UTCEG score recompute
  3. 2026-07-22 14:04 UTCEPSS rescore
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  1. 2026-07-06 16:24 UTCEPSS rescore
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  40. 2026-06-06 08:14 UTCOSV refresh
  41. 2026-06-05 22:44 UTCEPSS rescore
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  62. 2026-05-22 15:30 UTCEG score recompute
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Frequently asked(5)

What is CVE-2016-8747?
CVE-2016-8747 is a high vulnerability published on March 14, 2017. An information disclosure issue was discovered in Apache Tomcat 8.5.7 to 8.5.9 and 9.0.0.M11 to 9.0.0.M15 in reverse-proxy configurations. Http11InputBuffer.java allows remote attackers to read data that was intended to be associated with a different request.
When was CVE-2016-8747 disclosed?
CVE-2016-8747 was first published in the National Vulnerability Database on March 14, 2017, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2016-8747 actively exploited?
CVE-2016-8747 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 93.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2016-8747?
CVE-2016-8747 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2016-8747?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-8747, 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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