An issue was discovered on Supermicro X11SSM-F, X11SAE-F, and X11SSE-F 1.66 devices. An attacker could exploit an XSS issue.
Conclusion & alert: CVE-2023-40285 is rated Moderate Risk (42.7/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.25%). 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 | 2026-01-30 | 0.26% | 0.25% | -0.01% |
| 2 | 2026-01-18 | 0.25% | 0.26% | +0.01% |
| 3 | 2025-11-21 | — | 0.25% | — |
Full EPSS history (11 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.5 | 3.1 | MEDIUM |
|
3.9 | 2.5 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| supermicro | x11ssm-f_firmware | 1.66 | cpe:2.3:o:supermicro:x11ssm-f_firmware:1.66:*:*:*:*:*:*:* |
| supermicro | x11sae-f_firmware | 1.66 | cpe:2.3:o:supermicro:x11sae-f_firmware:1.66:*:*:*:*:*:*:* |
| supermicro | x11sse-f_firmware | 1.66 | cpe:2.3:o:supermicro:x11sse-f_firmware:1.66:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://www.supermicro.com/en/support/security_BMC_IPMI_Oct_2023 | Vendor Advisory |
| https://www.supermicro.com/en/support/security_center#%21advisories | Vendor Advisory |