CVE-2020-8517

mediumpriority · track · 32EPSS 0.068 · 94 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

6.85% (94th) EPSS

CVSS 5 · medium

Is it mine?

52 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

An issue was discovered in Squid before 4.10. Due to incorrect input validation, the NTLM authentication credentials parser in ext_lm_group_acl may write to memory outside the credentials buffer. On systems with memory access protections, this can result in the helper process being terminated unexpectedly. This leads to the Squid process also terminating and a denial of service for all clients using the proxy.

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-20USprimaryCWE-787USprimaryCWE-20US

affected products (52)

Products and version ranges known to be affected.

Amazon Linux 2all versionscert_bundDEcpe:/o:amazon:linux_2:-
Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
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:-
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
n/a n/a≤ n/aenisa_euvdEU
Canonical Ltd. Ubuntu≤ 16.04 LTSfstec_bduRU
Canonical Ltd. Ubuntu≤ 19.10fstec_bduRU
Canonical Ltd. Ubuntu≤ 18.04 LTSfstec_bduRU
Novell Inc. HPE Helion Openstack≤ 8fstec_bduRU
Novell Inc. OpenSUSE Leap≤ 15.1fstec_bduRU
Novell Inc. SUSE Enterprise Storage≤ 5fstec_bduRU
Novell Inc. SUSE Linux Enterprise High Performance Computing≤ 15-LTSSfstec_bduRU
Novell Inc. SUSE Linux Enterprise High Performance Computing≤ 15-ESPOSfstec_bduRU
Novell Inc. SUSE Linux Enterprise Module for Server Applications≤ 15 SP1fstec_bduRU
Novell Inc. SUSE Linux Enterprise Module for Server Applications≤ 15 SP2fstec_bduRU
Novell Inc. SUSE Linux Enterprise Point of Sale≤ 12 SP2-CLIENTfstec_bduRU
Novell Inc. SUSE Linux Enterprise Server for SAP Applications≤ 12 SP3-BCLfstec_bduRU
Novell Inc. SUSE Linux Enterprise Server for SAP Applications≤ 15fstec_bduRU

showing 20 of 52

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-1361Squid: Mehrere SchwachstellenDeutsch2020-02-03csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Squid ausnutzen, um Informationen offenzulegen, einen Denial of Service zu verursachen, Sicherheitsvorkehrungen zu umgehen oder Code zur Ausführung zu bringen.

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 2020-02-04modified 2026-06-17

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+40866 more

references (34)

External citations — patches, advisories, analysis.

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