CVE-2016-6817

mediumpriority · track · 33EPSS 0.072 · 94 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

7.19% (94th) EPSS

CVSS 5 · medium

Is it mine?

20 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

The HTTP/2 header parser in Apache Tomcat 9.0.0.M1 to 9.0.0.M11 and 8.5.0 to 8.5.6 entered an infinite loop if a header was received that was larger than the available buffer. This made a denial of service attack possible.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · OSV

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondaryexploitability 3.9 · impact 3.6

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-119USprimaryCWE-119USCWE-835USCWE-835US

affected products (20)

Products and version ranges known to be affected.

Apache Tomcat <8.0.39all versionscert_bundDE
Apache Tomcat <9.0.0.M13all versionscert_bundDE
Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
Apache Tomcat< 8.0.39cert_bundDE
Apache Tomcat< 9.0.0.M13cert_bundDE
Apache Software Foundation Apache Tomcat≤ 8.5.0 to 8.5.6enisa_euvdEU
Apache Software Foundation Apache Tomcat≤ 9.0.0.M1 to 9.0.0.M11enisa_euvdEU
apache tomcat= 8.5.0nvdUScpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
apache tomcat= 8.5.1nvdUScpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
apache tomcat= 8.5.2nvdUScpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
apache tomcat= 8.5.3nvdUScpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
apache tomcat= 8.5.4nvdUScpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
apache tomcat= 8.5.5nvdUScpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
apache tomcat= 8.5.6nvdUScpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
apache tomcat= 9.0.0nvdUScpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
Maven org.apache.tomcat:tomcat8.5.0 → 8.5.8osvUSpkg:maven/org.apache.tomcat/tomcat
Maven org.apache.tomcat:tomcat9.0.0.M1 → 9.0.0.M12osvUSpkg:maven/org.apache.tomcat/tomcat

advisories (3)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2024-0528Dell Data Protection Advisor: Mehrere SchwachstellenDeutsch2024-02-29csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Dell Data Protection Advisor ausnutzen, um beliebigen Code auszuführen, einen Denial-of-Service-Zustand herbeizuführen, Dateien zu manipulieren, vertrauliche Informationen offenzulegen, seine Berechtigungen zu erweitern oder einen nicht spezifizierten Angriff durchzuführen.
WID-SEC-W-2025-0215Apache Tomcat: Mehrere SchwachstellenDeutsch2016-11-22csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Apache Tomcat ausnutzen, um einen Denial of Service Angriff durchzuführen, vertrauliche Informationen offenzulegen oder beliebigen Code zur Ausführung zu bringen.
GHSA-698c-2x4j-g9gqImproper Restriction of Operations within the Bounds of a Memory Buffer in Apache Tomcat2022-05-14ghsa · osvUS
The HTTP/2 header parser in Apache Tomcat 9.0.0.M1 to 9.0.0.M11 and 8.5.0 to 8.5.6 entered an infinite loop if a header was received that was larger than the available buffer. This made a denial of service attack possible.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd osv NVD CVE.org MITRE

published 2017-08-10modified 2026-06-17

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+21023 more

references (25)

External citations — patches, advisories, analysis.

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