Intel TDX Restrictions memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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2.9$0-$5k0.00

Summaryinfo

A vulnerability was found in Intel TDX. It has been declared as critical. This issue affects some unknown processing of the component Restrictions Handler. The manipulation results in memory corruption. This vulnerability is reported as CVE-2025-21096. The attack requires a local approach. No exploit exists.

Detailsinfo

A vulnerability classified as problematic has been found in Intel TDX (version now known). Affected is some unknown processing of the component Restrictions Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Improper buffer restrictions in the firmware for some Intel(R) TDX may allow a privileged user to potentially enable escalation of privilege via local access.

The advisory is shared for download at intel.com. This vulnerability is traded as CVE-2025-21096 since 01/16/2025. The exploitability is told to be difficult. The attack needs to be approached locally. Additional levels of successful authentication are required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 11/01/2025).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2025-1785). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Debian Linux
  • Amazon Linux 2
  • SUSE Linux
  • Dell PowerEdge
  • Lenovo Computer
  • HPE ProLiant
  • SUSE openSUSE
  • HP Computer
  • Dell PowerScale
  • Dell Computer
  • Dell Avamar
  • Intel Prozessor
  • Dell NetWorker

Productinfo

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 2.9
VulDB Meta Temp Score: 2.9

VulDB Base Score: 3.9
VulDB Temp Score: 3.9
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 1.9
CNA Vector (intel): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

01/16/2025 CVE reserved
08/12/2025 +207 days Advisory disclosed
08/12/2025 +0 days VulDB entry created
11/01/2025 +81 days VulDB entry last update

Sourcesinfo

Vendor: intel.com

Advisory: intel-sa-01312
Status: Confirmed

CVE: CVE-2025-21096 (🔒)
GCVE (CVE): GCVE-0-2025-21096
GCVE (VulDB): GCVE-100-319752
CERT Bund: WID-SEC-2025-1785 - Intel Prozessoren: Mehrere Schwachstellen

Entryinfo

Created: 08/12/2025 20:41
Updated: 11/01/2025 23:32
Changes: 08/12/2025 20:41 (74), 11/01/2025 23:32 (7)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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