CVE-2020-15688

mediumpriority · track · 36OT risk · elevatedEPSS 0.040 · 91 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

4.04% (91st) EPSS

CVSS 6.8 · medium

Is it mine?

4 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · scored 2026-10-27

The HTTP Digest Authentication in the GoAhead web server before 5.1.2 does not completely protect against replay attacks. This allows an unauthenticated remote attacker to bypass authentication via capture-replay if TLS is not used to protect the underlying communication channel.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedMSMcisa_csaf_ot
According to Hitachi Energy, users should follow recommended security practices and firewall configurations to help protect a network from outside attacks, including:

cvss

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

8.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.8–8.8

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

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.08.8highCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · CISA US

v3.18.1highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-294USprimaryCWE-294US

affected products (4)

Products and version ranges known to be affected.

MSM: <= 2.2.5all versionscisa_csaf_otUS
Hitachi Energy MSM≤ 2.2.5cisa_csaf_otUS
n/a n/a≤ n/aenisa_euvdEU
embedthis goahead< 5.1.2nvdUScpe:2.3:a:embedthis:goahead:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-23-129-02Hitachi Energy MSM2023-05-10icsa · cisa_csaf_otUS
Successful exploitation of these vulnerabilities could allow an attacker to obtain user access credentials of the MSM web interface or cause a denial-of-service condition.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cisa_csaf_ot nvd NVD CVE.org MITRE

published 2020-07-23modified 2026-06-17

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+336 more

references (9)

External citations — patches, advisories, analysis.

scry

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