CVE-2026-23370

Firmware password disclosure via kernel hex dump

Published Mar 25, 2026 · Updated Mar 25, 2026

Information disclosure in Linux Kernel 5.11 and affected later releases allows attackers to leak Dell firmware passwords via kernel logging. The set_new_password() function calls print_hex_dump_bytes() on its complete WMI request buffer, which contains current and new passwords in plaintext. Exposure requires a password-change operation on a Dell system using dell-wmi-sysman and access to the resulting kernel log data.

CVSS severity5.5
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Linux Kernel 5.11 and affected later releases allows attackers to leak Dell firmware passwords via kernel logging. The set_new_password() function calls print_hex_dump_bytes() on its complete WMI request buffer, which contains current and new passwords in plaintext. Exposure requires a password-change operation on a Dell system using dell-wmi-sysman and access to the resulting kernel log data.

The record

CVE
CVE-2026-23370
Published
Mar 25, 2026
Updated
Mar 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 25, 2026Record 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=5.11
  2. Affected versionversion=e8a60aa7404bfef37705da5607c97737073ac38d <0e6115c2f2facaed9593c16ad2e5accd487f5c52
  3. Affected versionversion=e8a60aa7404bfef37705da5607c97737073ac38d <411ba3cd837f7825c0e648e155bc505641f95854
  4. Affected versionversion=e8a60aa7404bfef37705da5607c97737073ac38d <5de34126fb2edf8ab7f25d677b132e92d8bf9ede
  5. Affected versionversion=e8a60aa7404bfef37705da5607c97737073ac38d <d1a196e0a6dcddd03748468a0e9e3100790fc85c
  6. Affected versionversion=e8a60aa7404bfef37705da5607c97737073ac38d <d78e74adc5cfff7afd9d03b9da8058a7e435f9bc
  7. Affected versionversion=e8a60aa7404bfef37705da5607c97737073ac38d <d9e785bd62d2ac23cf29a75dcfea8c8087fd3870

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=5.11; version=e8a60aa7404bfef37705da5607c97737073ac38d <0e6115c2f2facaed9593c16ad2e5accd487f5c52; version=e8a60aa7404bfef37705da5607c97737073ac38d <411ba3cd837f7825c0e648e155bc505641f95854; version=e8a60aa7404bfef37705da5607c97737073ac38d <5de34126fb2edf8ab7f25d677b132e92d8bf9ede; version=e8a60aa7404bfef37705da5607c97737073ac38d <d1a196e0a6dcddd03748468a0e9e3100790fc85c; version=e8a60aa7404bfef37705da5607c97737073ac38d <d78e74adc5cfff7afd9d03b9da8058a7e435f9bc; version=e8a60aa7404bfef37705da5607c97737073ac38d <d9e785bd62d2ac23cf29a75dcfea8c8087fd3870

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

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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