CVE-2025-35979

Guest data disclosure via shared predictor state

Published May 12, 2026 · Updated May 12, 2026

Information disclosure in affected Intel Processors allows local users in a VMX guest to read data through transient execution. Shared microarchitectural predictor state crosses VMX non-root execution contexts and steers transient execution using state influenced by another context. Exploitation requires an authenticated, low-privileged guest user, high attack complexity, and particular runtime conditions; no integrity or availability impact is reported.

CVSS severity6.8
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

Information disclosure in affected Intel Processors allows local users in a VMX guest to read data through transient execution. Shared microarchitectural predictor state crosses VMX non-root execution contexts and steers transient execution using state influenced by another context. Exploitation requires an authenticated, low-privileged guest user, high attack complexity, and particular runtime conditions; no integrity or availability impact is reported.

The record

CVE
CVE-2025-35979
Published
May 12, 2026
Updated
May 12, 2026
Vendor
Topcon Positioning Systems, Inc.
Product
Intel Processors
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 12, 2026CVE publishedPublication date reported by the CVE source.
  2. May 12, 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=See references

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Topcon Positioning Systems, Inc. · Intel Processorsversion=See references

Published CVSS scores

6.8Intel CorporationCVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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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