Security readout for executives and security teams
Plain-English summary
This vulnerability affects some Intel Xeon 6 systems using Intel TDX. Under demanding conditions, an attacker who already has privileged local access and control within System Management Mode could compromise protected information or its integrity. Exploitation is complex, requires special internal knowledge, and needs no user interaction.
Executive priority
Treat as a high-priority platform issue where Xeon 6 and TDX protect sensitive or multi-tenant workloads. First establish exposure, then follow Intel and system-vendor remediation guidance. Systems without the specified processor and TDX configuration are not demonstrated as affected by the supplied evidence.
Technical view
Overlapping protected memory ranges are handled improperly when Intel TDX operates within SMM on affected Xeon 6 processors. A highly privileged SMM adversary may cross a protection boundary, causing high confidentiality and integrity impact. The supplied CVSS 4.0 score is 7.0; availability impact is not identified.
Likely exposure
Exposure is limited to specified Intel Xeon 6 processors using Intel TDX under the vulnerable SMM conditions. Exact processor models and affected versions are not included in the supplied bundle and must be confirmed against Intel advisory INTEL-SA-01379.
Exploitation context
The supplied evidence does not establish active exploitation, and the CVE is not listed as KEV in the bundle. Exploitation requires local access, high privileges, high complexity, additional attack conditions, SMM capability, and special internal knowledge. These prerequisites reduce likelihood but not potential impact.
Researcher notes
CWE-1260 concerns improper handling of overlap between protected memory ranges. The stated boundary failure occurs within SMM while using TDX. Exact vulnerable models, firmware dependencies, remediation versions, and detection indicators are absent from the bundle; consult Intel's advisory before drawing product-specific conclusions.
Mitigation direction
- Review Intel advisory INTEL-SA-01379 for affected processor models and vendor-approved remediation.
- Apply Intel or system-vendor updates identified by the advisory after appropriate testing.
- Restrict privileged local access and tightly control administrative pathways to affected hosts.
- Prioritize systems using TDX for sensitive workloads or tenant isolation.
Validation and detection
- Inventory Intel Xeon 6 processor models across physical hosts.
- Determine whether Intel TDX is enabled and actively used on each host.
- Compare processor and platform versions with Intel advisory INTEL-SA-01379.
- Verify recommended Intel or system-vendor updates are installed.
- Review privileged-access records for unexpected local or platform-administration activity.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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CWE-1260: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2025-31936 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N——intelVulnerability scoring details
Base CVSS 4.0 score
7HighVector: CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01379.htmlCVE reference, intel
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Handling of Overlap Between Protected Memory Ranges
Improper Handling of Overlap Between Protected Memory Ranges represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.