CVE-2023-40284

An issue was discovered on Supermicro X11SSM-F, X11SAE-F, and X11SSE-F 1.66 devices. An attacker could exploit an XSS issue.

Published: 2024-03-27 Last update: 2025-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-40284 is rated Moderate Risk (58.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.71%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-40284

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 0.78% 0.71% -0.07%
2 2025-11-18 0.71% 0.78% +0.07%
3 2025-08-16 — 0.71% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-40284

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.3 3.1 HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.6 6.0 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2023-40284

Affected software / configurations for CVE-2023-40284

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:*:*:*:*:*:*:*

References for CVE-2023-40284

cvelogic Threat Intelligence