Ampere Altra devices before 1.08g and Ampere Altra Max devices before 2.05a allow attackers to control the predictions for return addresses and potentially hijack code flow to execute arbitrary code via a side-channel attack, aka a "Retbleed" issue.
Conclusion & alert: CVE-2022-37459 is rated Moderate Risk (44.6/100): CVSS High severity, with low exploitation likelihood (EPSS 0.17%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2025-11-21 | 0.06% | 0.17% | +0.11% |
| 2 | 2025-11-18 | 0.17% | 0.06% | -0.11% |
| 3 | 2025-08-18 | — | 0.17% | — |
Full EPSS history (7 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.8 | 3.1 | HIGH |
|
1.8 | 5.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| amperecomputing | ampere_altra_firmware | < 1.08g | cpe:2.3:o:amperecomputing:ampere_altra_firmware:*:*:*:*:*:*:*:* |
| amperecomputing | ampere_altra_max_firmware | < 2.05a | cpe:2.3:o:amperecomputing:ampere_altra_max_firmware:*:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://amperecomputing.com/products/security-bulletins/retbleed.html | Vendor Advisory |
| https://developer.arm.com/documentation/ka005138/1-0/ | Third Party Advisory |