How severe is CVE-2021-45454?

CVE-2021-45454 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-45454 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-45454?

CVE-2021-45454 primarily affects Amperecomputing Ampere Altra Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-45454?

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

When was CVE-2021-45454 published?

CVE-2021-45454 was published on 2022-08-17 and last updated on 2026-06-17.

CVE-2021-45454

CVE-2021-45454 is a high-severity vulnerability in Amperecomputing Ampere Altra Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Amperecomputing Ampere Altra Firmware
Published: 2022-08-17
Last modified: 2026-06-17

Description

Ampere Altra before SRP 1.08b and Altra Max before SRP 2.05 allow information disclosure of power telemetry via HWmon.

Frequently asked questions

What is CVE-2021-45454?: Ampere Altra before SRP 1.08b and Altra Max before SRP 2.05 allow information disclosure of power telemetry via HWmon.
How severe is CVE-2021-45454?: CVE-2021-45454 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-45454 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-45454?: CVE-2021-45454 primarily affects Amperecomputing Ampere Altra Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-45454?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-45454 published?: CVE-2021-45454 was published on 2022-08-17 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:o:amperecomputing:ampere_altra_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amperecomputing:ampere_altra_max_firmware:*:*:*:*:*:*:*:*

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