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UK Cyber Defence
VulnerabilityAnalyzed

CVE-2023-40290

An attacker could exploit an XSS issue that affects Internet Explorer 11 on Windows.

HIGH 8.3EPSS 0.70%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.70%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

An issue was discovered on Supermicro X11SSM-F, X11SAE-F, and X11SSE-F 1.66 devices. An attacker could exploit an XSS issue that affects Internet Explorer 11 on Windows.

CVSS 3.1
8.3 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
EPSS
0.70% probability · 53th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-79
Affected
supermicro/x11ssm-f firmware · supermicro/x11sae-f firmware · supermicro/x11sse-f firmware
Source
cve@mitre.org
EPSS trend
0%3%5%26 October 2026: 0.70%26 October 202626 October 2026

EPSS 0.7% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.