CVE-2023-40287Public exploitNetwork attack vector

Administrator account creation via unsanitized pdomain parameter

Published Mar 27, 2024 · Updated Aug 5, 2024

DOM-based XSS in Supermicro X11SSM-F, X11SAE-F, and X11SSE-F BMC firmware 1.66 allows remote attackers to run script in an administrator session. The modify_nm_policy PageInit function decodes the pdomain query parameter and assigns it to the PolicyDomain element through innerHTML without sanitization. Exploitation requires a logged-in BMC administrator to open a crafted link; injected script can steal the CSRF token and create an administrator account.

CVSS severity8.3
High
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

DOM-based XSS in Supermicro X11SSM-F, X11SAE-F, and X11SSE-F BMC firmware 1.66 allows remote attackers to run script in an administrator session. The modify_nm_policy PageInit function decodes the pdomain query parameter and assigns it to the PolicyDomain element through innerHTML without sanitization. Exploitation requires a logged-in BMC administrator to open a crafted link; injected script can steal the CSRF token and create an administrator account.

The record

CVE
CVE-2023-40287
Published
Mar 27, 2024
Updated
Aug 5, 2024
Vendor
Supermicro
Product
X11SSE-F Firmware
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 27, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.66

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Supermicro · X11SSE-F Firmwareversion=1.66
Supermicro · X11SSM-F Firmwareversion=1.66
Supermicro · X11SAE-F Firmwareversion=1.66

Published CVSS scores

9.6BinarlyCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
8.3CISA-ADPCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
8.3SupermicroCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001Malicious Link

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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