CVE-2020-35452

mediumpriority · attend · 48EPSS 0.548 · 99 %ileDEEURUUS

grimoire priorityP1 · Urgent

Exploitable?

—

no known exploitation

Likely / severe?

54.8% (99th) EPSS

CVSS 6.8 · medium

Is it mine?

66 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted Digest nonce can cause a stack overflow in mod_auth_digest. There is no report of this overflow being exploitable, nor the Apache HTTP Server team could create one, though some particular compiler and/or compilation option might make it possible, with limited consequences anyway due to the size (a single byte) and the value (zero byte) of the overflow

cvss

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

7.3

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.8–7.3

v2.06.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8.6 · impact 6.4

v3.17.3highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:Lprimary · NVD / NIST USexploitability 3.9 · impact 3.4

v3.17.3highAV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:Lsecondary · FSTEC (BDU) RU

v3.17.3highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:Hsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USprimaryCWE-787US

affected products (66)

Products and version ranges known to be affected.

Juniper JUNOSall versionscert_bundDEcpe:/o:juniper:junos:-
Apache Software Foundation Apache HTTP Server≤ 2.4.16enisa_euvdEU
Apache Software Foundation Apache HTTP Server≤ 2.4.34enisa_euvdEU
Apache Software Foundation Apache HTTP Server≤ 2.4.28enisa_euvdEU
Apache Software Foundation Apache HTTP Server≤ 2.4.37enisa_euvdEU
Apache Software Foundation Apache HTTP Server≤ 2.4.4enisa_euvdEU
Apache Software Foundation Apache HTTP Server≤ 2.4.46enisa_euvdEU
Apache Software Foundation Apache HTTP Server≤ 2.4.33enisa_euvdEU
Apache Software Foundation Apache HTTP Server≤ 2.4.17enisa_euvdEU
Apache Software Foundation Apache HTTP Server≤ 2.4.10enisa_euvdEU
Apache Software Foundation Apache HTTP Server≤ 2.4.27enisa_euvdEU
Apache Software Foundation Apache HTTP Server≤ 2.4.2enisa_euvdEU
Apache Software Foundation Apache HTTP Server≤ 2.4.43enisa_euvdEU
Apache Software Foundation Apache HTTP Server≤ 2.4.3enisa_euvdEU
Apache Software Foundation Apache HTTP Server≤ 2.4.1enisa_euvdEU
Apache Software Foundation Apache HTTP Server≤ 2.4.38enisa_euvdEU
Apache Software Foundation Apache HTTP Server≤ 2.4.39enisa_euvdEU
Apache Software Foundation Apache HTTP Server≤ 2.4.25enisa_euvdEU
Apache Software Foundation Apache HTTP Server≤ 2.4.0enisa_euvdEU
Apache Software Foundation Apache HTTP Server≤ 2.4.26enisa_euvdEU

showing 20 of 66

advisories (3)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2022-0438Apache HTTP Server: Mehrere SchwachstellenDeutsch2021-06-09csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Apache HTTP Server ausnutzen, um einen Denial of Service Angriff durchzuführen, Sicherheitsvorkehrungen zu umgehen oder sonstige Auswirkungen zu verursachen.
WID-SEC-W-2024-1591Juniper JUNOS: Mehrere SchwachstellenDeutsch2024-07-10csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Juniper JUNOS ausnutzen, um einen Denial of Service zu verursachen, Informationen offenzulegen, Privilegien zu erweitern und Sicherheitsmechanismen inklusive zu umgehen.
BIT-apache-2020-35452mod_auth_digest possible stack overflow by one nul byte2024-03-06vendor · osvUS
Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted Digest nonce can cause a stack overflow in mod_auth_digest. There is no report of this overflow being exploitable, nor the Apache HTTP Server team could create one, though some particular compiler and/or compilation option might make it possible, with limited consequences anyway due to the size (a single byte) and the value (zero byte) of the overflow

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 osv NVD CVE.org MITRE

published 2021-06-10modified 2026-06-17

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Related entries.

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+16119 more

references (56)

External citations — patches, advisories, analysis.

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