How severe is CVE-2021-22763?

CVE-2021-22763 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-22763 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-22763?

CVE-2021-22763 primarily affects Schneider-electric Powerlogic Pm5560 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-22763?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-22763 published?

CVE-2021-22763 was published on 2021-06-11 and last updated on 2026-06-17.

CVE-2021-22763

CVE-2021-22763 is a critical-severity vulnerability in Schneider-electric Powerlogic Pm5560 Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-640.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-640
Affected product: Schneider-electric Powerlogic Pm5560 Firmware
Published: 2021-06-11
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-22763?: 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.
How severe is CVE-2021-22763?: CVE-2021-22763 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-22763 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-22763?: CVE-2021-22763 primarily affects Schneider-electric Powerlogic Pm5560 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-22763?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-22763 published?: CVE-2021-22763 was published on 2021-06-11 and last updated on 2026-06-17.

References

Affected products (5)

cpe:2.3:o:schneider-electric:powerlogic_pm5560_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:powerlogic_pm5561_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:powerlogic_pm5562_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:powerlogic_pm5563_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:powerlogic_pm8ecc_firmware:*:*:*:*:*:*:*:*

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