Is CVE-2021-22763 in the CISA KEV catalog?

No. CVE-2021-22763 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-22763?

CVE-2021-22763 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2021-22763?

CVE-2021-22763 has an EPSS score of 1.84% (76th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-22763?

Upgrade powerlogic pm5560 firmware to 2.7.8 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2021-22763

CRITICALEPSS 76th pctl

9.8

CVSS v3

NVD

Description

A CWE-640: Weak Password Recovery Mechanism for Forgotten Password vulnerability exists in PowerLogic PM55xx, PowerLogic PM8ECC, PowerLogic EGX100 and PowerLogic EGX300 (see security notification for version infromation) that could allow an attacker administrator level access to a device.

CWE-640

How to fix

Remediation Available

powerlogic pm5560 firmwareNVD

Affected:< 2.7.8Fixed in:2.7.8CVE-2021-22763derived from NVD

powerlogic pm5561 firmwareNVD

Affected:< 10.7.3Fixed in:10.7.3CVE-2021-22763derived from NVD

powerlogic pm5563 firmwareNVD

Affected:< 2.7.8Fixed in:2.7.8CVE-2021-22763derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.84%probability of exploitation in 30 days

76thpercentile

Elevated risk: more likely to be exploited than 76% of all known CVEs.

References

Other references2

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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 2026-05-29.