CVE-2019-9515

highpriority · attend · 61EPSS 0.874 · 100 %ileDEEURUUS

grimoire priorityP1 · Urgent

Exploitable?

—

no known exploitation

Likely / severe?

87.4% (100th) EPSS

CVSS 7.8 · high

Is it mine?

77 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-23

Some HTTP/2 implementations are vulnerable to a settings flood, potentially leading to a denial of service. The attacker sends a stream of SETTINGS frames to the peer. Since the RFC requires that the peer reply with one acknowledgement per SETTINGS frame, an empty SETTINGS frame is almost equivalent in behavior to a ping. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.

cvss

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

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.07.8highAV:N/AC:L/Au:N/C:N/I:N/A:Cprimary · NVD / NIST USexploitability 10 · impact 6.9

v3.17.5highCVSS:3.1/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 · ENISA EU

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · cret@cert.org USexploitability 3.9 · impact 3.6

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Hsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-770USprimaryCWE-400USCWE-400US

affected products (77)

Products and version ranges known to be affected.

A10 Networks ACOS <4.1.4-GR1-P3all versionscert_bundDE
A10 Networks ACOS <5.0.0-P1all versionscert_bundDE
Apache Traffic Server <7.1.7all versionscert_bundDE
Apache Traffic Server <8.0.4all versionscert_bundDE
Arista EOSall versionscert_bundDEcpe:/o:arista:arista_eos:-
Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
EMC Avamarall versionscert_bundDEcpe:/a:emc:avamar:-
Hitachi Ops Centerall versionscert_bundDEcpe:/a:hitachi:ops_center:-
IBM DB2 11.1all versionscert_bundDEcpe:/a:ibm:db2:11.1
IBM DB2 11.5all versionscert_bundDEcpe:/a:ibm:db2:11.5
IBM SPSS Analytic Serverall versionscert_bundDEcpe:/a:ibm:spss:analytic_server
Juniper JUNOSall versionscert_bundDEcpe:/o:juniper:junos:-
Open Source Arch Linuxall versionscert_bundDEcpe:/o:archlinux:archlinux:-
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
A10 Networks ACOS< 4.1.4-GR1-P3cert_bundDE
A10 Networks ACOS< 5.0.0-P1cert_bundDE
Apache Traffic Server< 7.1.7cert_bundDE
Apache Traffic Server< 8.0.4cert_bundDE

showing 20 of 77

advisories (3)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2022-0770IBM DB2: Mehrere SchwachstellenDeutsch2020-04-23csaf · cert_bundDE
Ein entfernter, anonymer oder authentisierter Angreifer kann mehrere Schwachstellen in IBM DB2 ausnutzen, um seine Privilegien zu erhöhen oder einen Denial of Service zu verursachen
WID-SEC-W-2024-1926Red Hat JBoss Enterprise Application Platform: Mehrere SchwachstellenDeutsch2024-08-26csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Red Hat JBoss Enterprise Application Platform auf Red Hat Enterprise Linux ausnutzen, um beliebigen Programmcode auszuführen, einen Denial-of-Service-Zustand zu erzeugen, vertrauliche Informationen preiszugeben, Dateien und Daten zu manipulieren oder Sicherheitsmaßnahmen zu umgehen.
WID-SEC-W-2026-0426Apache Traffic Server: Mehrere Schwachstellen ermöglichen Denial of ServiceDeutsch2019-08-14csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Apache Traffic Server ausnutzen, um einen Denial of Service Angriff durchzuführen.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund NVD CVE.org MITRE

published 2019-08-13modified 2026-06-17

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Related entries.

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+3225 more

references (211)

External citations — patches, advisories, analysis.

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