CVE-2024-25079

SMM privilege escalation via HddPassword memory corruption

Published May 15, 2024 · Updated Feb 13, 2025

Memory corruption in InsydeH2O HddPassword allows local administrators to escalate privileges into System Management Mode. Insyde and the CVE record identify the HddPassword locus but do not disclose the faulty pointer operation, attacker-controlled input, or affected function. Exploitation requires local high privileges and high-complexity conditions; success crosses the operating-system trust boundary and compromises SMM confidentiality and integrity while risking a limited service interruption.

CVSS severity7.4
High
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in InsydeH2O HddPassword allows local administrators to escalate privileges into System Management Mode. Insyde and the CVE record identify the HddPassword locus but do not disclose the faulty pointer operation, attacker-controlled input, or affected function. Exploitation requires local high privileges and high-complexity conditions; success crosses the operating-system trust boundary and compromises SMM confidentiality and integrity while risking a limited service interruption.

The record

CVE
CVE-2024-25079
Published
May 15, 2024
Updated
Feb 13, 2025
Vendor
Insyde Software
Product
InsydeH2O UEFI BIOS
Classifications
CWE-763, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. May 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=5.2 <05.38.09
  2. Affected versionversion=5.3 <05.46.09
  3. Affected versionversion=5.4 <05.54.09
  4. Affected versionversion=5.5 <05.29.09
  5. Affected versionversion=5.6 <05.61.09

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Insyde Software · InsydeH2O UEFI BIOSversion=5.2 <05.38.09; version=5.3 <05.46.09; version=5.4 <05.54.09; version=5.5 <05.29.09; version=5.6 <05.61.09

Published CVSS scores

7.4CISA-ADPCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:L

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-763Release of Invalid Pointer or Reference
T1068Exploitation for Privilege Escalation

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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