CVE-2025-27560

Privileged local system hang via infinite loop

Published Feb 10, 2026 · Updated Feb 10, 2026

Infinite-loop handling in the Ring 0 kernel on affected Intel Xeon 6 platforms allows local users to hang the entire system. The Ring 0 kernel enters a loop whose exit condition cannot be reached, but Intel has not disclosed the triggering operation or input. Exploitation requires a privileged system-software user with local access and causes an availability-only service interruption.

CVSS severity6.7
Medium
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Infinite-loop handling in the Ring 0 kernel on affected Intel Xeon 6 platforms allows local users to hang the entire system. The Ring 0 kernel enters a loop whose exit condition cannot be reached, but Intel has not disclosed the triggering operation or input. Exploitation requires a privileged system-software user with local access and causes an availability-only service interruption.

The record

CVE
CVE-2025-27560
Published
Feb 10, 2026
Updated
Feb 10, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-835, T1499
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Feb 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 10, 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

6.7Intel CorporationCVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
6.0Intel CorporationCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/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.

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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-835Loop with Unreachable Exit Condition ('Infinite Loop')
T1499Endpoint Denial of Service

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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