CVE-2025-35973

Privileged cross-boundary escalation via improper value handling

Published Aug 11, 2026 · Updated Aug 11, 2026

Privilege escalation in some Intel Processors allows local users with privileged access to cross a kernel or hypervisor boundary. Intel identifies improper handling of internal processor values during Ring 0 execution but has not disclosed the affected operation or value semantics. Exploitation requires local access, high privileges, high complexity, special internal knowledge, and attack requirements, with confidentiality and integrity impact across a hypervisor boundary.

CVSS severity4.5
Medium
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in some Intel Processors allows local users with privileged access to cross a kernel or hypervisor boundary. Intel identifies improper handling of internal processor values during Ring 0 execution but has not disclosed the affected operation or value semantics. Exploitation requires local access, high privileges, high complexity, special internal knowledge, and attack requirements, with confidentiality and integrity impact across a hypervisor boundary.

The record

CVE
CVE-2025-35973
Published
Aug 11, 2026
Updated
Aug 11, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-229, CWE-266, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Aug 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 11, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.5IntelCVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:L/VI:L/VA:N/SC:H/SI:H/SA:N
7.2Red HatCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N

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-229Improper Handling of Values
CWE-266Incorrect Privilege Assignment
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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