CVE-2020-9494

mediumpriority · track · 31EPSS 0.036 · 89 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

3.58% (89th) EPSS

CVSS 5 · medium

Is it mine?

17 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

Apache Traffic Server 6.0.0 to 6.2.3, 7.0.0 to 7.1.10, and 8.0.0 to 8.0.7 is vulnerable to certain types of HTTP/2 HEADERS frames that can cause the server to allocate a large amount of memory and spin the thread.

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

v3.17.5highCVSS: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

v3.17.5highAV: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-119US

affected products (17)

Products and version ranges known to be affected.

Amazon Linux 2all versionscert_bundDEcpe:/o:amazon:linux_2:-
Apache Traffic Server <= 6.2.3all versionscert_bundDEcpe:/a:apache:traffic_server:6.2.3
Apache Traffic Server <= 7.1.10all versionscert_bundDEcpe:/a:apache:traffic_server:7.1.10
Apache Traffic Server <= 8.0.7all versionscert_bundDEcpe:/a:apache:traffic_server:8.0.7
Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
Apache Software Foundation Apache Traffic Server≤ 8.0.0 to 8.0.7enisa_euvdEU
Apache Software Foundation Apache Traffic Server≤ 6.0.0 to 6.2.3enisa_euvdEU
Apache Software Foundation Apache Traffic Server≤ 7.0.0 to 7.1.10enisa_euvdEU
Apache Software Foundation Traffic Server6.0.0 → 6.2.3fstec_bduRU
Apache Software Foundation Traffic Server7.0.0 → 7.1.10fstec_bduRU
Apache Software Foundation Traffic Server8.0.0 → 8.0.7fstec_bduRU
АО «Концерн ВНИИНС» ОС ОН «Стрелец»≤ 16.01.2023fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 10fstec_bduRU
apache traffic server6.0.0 → 6.2.3nvdUScpe:2.3:a:apache:traffic_server:*:*:*:*:*:*:*:*
apache traffic server7.0.0 → 7.1.10nvdUScpe:2.3:a:apache:traffic_server:*:*:*:*:*:*:*:*
apache traffic server8.0.0 → 8.0.7nvdUScpe:2.3:a:apache:traffic_server:*:*:*:*:*:*:*:*
debian debian linux= 10.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-2471Apache Traffic Server: Schwachstelle ermöglicht Denial of ServiceDeutsch2020-06-24csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle 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 NVD CVE.org MITRE

published 2020-06-24modified 2026-06-17

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+3263 more

references (15)

External citations — patches, advisories, analysis.

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