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Vulnerability record · CVE-2021-45454 · published 17 August 2022

CVE-2021-45454: Amperecomputing ampere altra firmware vulnerability

Amperecomputing · Ampere Altra Firmware

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

7.5 CVSS 3.1 High EPSS 0.72% · top 47.9%
7.5CVSS 3.1 base score
0.72%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

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

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://amperecomputing.com/product-security/ Broken LinkVendor Advisory
https://amperecomputing.com/products/security-bulletins/platypus.html PatchVendor Advisory
https://amperecomputing.com/product-security/ Broken LinkVendor Advisory
https://amperecomputing.com/products/security-bulletins/platypus.html PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2022-46892Amperecomputing ampere altra firmware improper access control vulnerabilityIn Ampere AltraMax and Ampere Altra before 2.10c, improper access controls allows the OS to reinitialize a disabled root complex.EPSS 0.62%9.8CVE-2022-32295Amperecomputing ampere altra firmware vulnerabilityOn Ampere Altra and AltraMax devices before SRP 1.09, the Altra reference design of UEFI accesses allows insecure access to SPI-NOR by the OS/hypervi…EPSS 1.3%7.8CVE-2022-37459Amperecomputing ampere altra firmware observable discrepancy vulnerabilityAmpere Altra devices before 1.08g and Ampere Altra Max devices before 2.05a allow attackers to control the predictions for return addresses and poten…EPSS 0.22%6.5CVE-2022-35888Amperecomputing ampere altra max firmware observable discrepancy vulnerabilityAmpere Altra and Ampere Altra Max devices through 2022-07-15 allow attacks via Hertzbleed, which is a power side-channel attack that extracts secret …EPSS 0.70%4.7CVE-2022-25368Amperecomputing ampere altra max firmware vulnerabilitySpectre BHB is a variant of Spectre-v2 in which malicious code uses the shared branch history (stored in the CPU BHB) to influence mispredicted branc…EPSS 0.30%

Source: NIST National Vulnerability Database (record CVE-2021-45454), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.