CVE-2019-9518

highpriority · track · 39EPSS 0.254 · 98 %ileDEEURUUS

grimoire priorityP1 · Urgent

Exploitable?

—

no known exploitation

Likely / severe?

25.4% (98th) EPSS

CVSS 7.8 · high

Is it mine?

65 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-22

Some HTTP/2 implementations are vulnerable to a flood of empty frames, potentially leading to a denial of service. The attacker sends a stream of frames with an empty payload and without the end-of-stream flag. These frames can be DATA, HEADERS, CONTINUATION and/or PUSH_PROMISE. The peer spends time processing each frame disproportionate to attack bandwidth. This can consume excess CPU.

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⚠ sources disagree · medium–high · 6.9–7.8

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

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

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-770USprimaryCWE-400USCWE-400US

affected products (65)

Products and version ranges known to be affected.

EMC Avamarall versionscert_bundDEcpe:/a:emc:avamar:-
Hitachi Ops Centerall versionscert_bundDEcpe:/a:hitachi:ops_center:-
Hitachi Ops Center <Analyzer 10.9.3-00all versionscert_bundDE
Hitachi Ops Center <Viewpoint 10.9.3-00all versionscert_bundDE
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
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
Hitachi Ops Center< Analyzer 10.9.3-00cert_bundDE
Hitachi Ops Center< Viewpoint 10.9.3-00cert_bundDE
n/a n/a≤ n/aenisa_euvdEU
Apache Software Foundation netty≤ 4.1.39.Finalfstec_bduRU
Apple Inc. SwiftNIO≤ 1.5.0fstec_bduRU
Microsoft Corp Windows 10all versionsfstec_bduRU
Microsoft Corp Windows 10 1607all versionsfstec_bduRU
Microsoft Corp Windows 10 1703all versionsfstec_bduRU
Microsoft Corp Windows 10 1709all versionsfstec_bduRU
Microsoft Corp Windows 10 1803all versionsfstec_bduRU
Microsoft Corp Windows 10 1809all versionsfstec_bduRU
Microsoft Corp Windows 10 1903all versionsfstec_bduRU

showing 20 of 65

advisories (1)

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

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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+3224 more

references (171)

External citations — patches, advisories, analysis.

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