Is CVE-2021-32926 in the CISA KEV catalog?

No. CVE-2021-32926 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-32926?

CVE-2021-32926 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2021-32926?

CVE-2021-32926 has an EPSS score of 2.19% (80th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2021-32926?

No published fix for CVE-2021-32926 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2021-32926

HIGHEPSS 80th pctl

7.5

CVSS v3

NVD

Description

When an authenticated password change request takes place, this vulnerability could allow the attacker to intercept the message that includes the legitimate, new password hash and replace it with an illegitimate hash. The user would no longer be able to authenticate to the controller (Micro800: All versions, MicroLogix 1400: Version 21 and later) causing a denial-of-service condition

CWE-300

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

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CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

2.19%probability of exploitation in 30 days

80thpercentile

Elevated risk: more likely to be exploited than 80% of all known CVEs.

References

Third-Party Advisory1

us-cert.cisa.gov

Related Vulnerabilities

Other CWE-300 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2009-3555	Critical	9.8	87%	-	Fix
CVE-2017-12150	High	7.4	13%	-	Fix
CVE-2017-12151	High	7.4	4.6%	-	Fix
CVE-2021-22890	Low	3.7	3.1%	-	Fix
CVE-2020-10749	Medium	6.0	2.4%	-	Fix
CVE-2017-7480	Critical	9.8	2.3%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-04.