CVE-2020-8659

mediumpriority · track · 31EPSS 0.019 · 79 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.89% (79th) EPSS

CVSS 5 · medium

Is it mine?

8 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-27

CNCF Envoy through 1.13.0 may consume excessive amounts of memory when proxying HTTP/1.1 requests or responses with many small (i.e. 1 byte) chunks.

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-400US

affected products (8)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
Red Hat Inc. Openshift Service Mesh≤ 1.0fstec_bduRU
Сообщество свободного программного обеспечения Envoy≤ 1.13.0fstec_bduRU
cncf envoy≤ 1.13.0nvdUScpe:2.3:a:cncf:envoy:*:*:*:*:*:*:*:*
debian debian linux= 9.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
envoyproxy envoy≤ 1.13.0nvdUScpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*
redhat openshift service mesh= 1.0nvdUScpe:2.3:a:redhat:openshift_service_mesh:*:*:*:*:*:*:*:*
Bitnami envoy≤ 1.13.0osvUSpkg:bitnami/envoy

advisories (1)

Vendor and ecosystem advisories describing this.

BIT-envoy-2020-86592026-10-05vendor · osvUS
CNCF Envoy through 1.13.0 may consume excessive amounts of memory when proxying HTTP/1.1 requests or responses with many small (i.e. 1 byte) chunks.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu osv nvd NVD CVE.org MITRE

published 2020-03-04modified 2026-06-17

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+3259 more

references (17)

External citations — patches, advisories, analysis.

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