CVE-2024-38660

Guest memory modification via faulty SPP enforcement

Published Nov 13, 2024 · Updated Nov 14, 2024

Protection mechanism failure in Intel Xeon 6 E-core processors allows guest OS users to alter protected guest memory through SPP. When a VMM enables SPP, the processor permits writes to 4 KB guest-physical regions that the hypervisor marked nonwritable. Reachability requires low-privileged guest access, EPT sub-page write permissions enabled, and at least one SPP-enabled page mapped into the guest.

CVSS severity2.0
Low
EPSS probability0.17%
Next 30 days · Sep 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Protection mechanism failure in Intel Xeon 6 E-core processors allows guest OS users to alter protected guest memory through SPP. When a VMM enables SPP, the processor permits writes to 4 KB guest-physical regions that the hypervisor marked nonwritable. Reachability requires low-privileged guest access, EPT sub-page write permissions enabled, and at least one SPP-enabled page mapped into the guest.

The record

CVE
CVE-2024-38660
Published
Nov 13, 2024
Updated
Nov 14, 2024
Vendor
Topcon Positioning Systems, Inc.
Product
Intel Xeon 6 Processors
Classifications
CWE-693, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 13, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 14, 2024Record 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=See references

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Topcon Positioning Systems, Inc. · Intel Xeon 6 Processorsversion=See references

Published CVSS scores

3.8Intel CorporationCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
2.0Intel CorporationCVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/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 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

CWE-693Protection Mechanism Failure
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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo