High severity · published Aug 11, 2026
CVE-2026-20885
Improper authentication in the Intel(R) TDX module for some Intel(R) platforms within Ring 0: Trust Domain may allow an information disclosure and escalation of privilege
7.2
CVSS
0.2%
EPSS
No
On KEV
Description
Improper authentication in the Intel(R) TDX module for some Intel(R) platforms within Ring 0: Trust Domain may allow an information disclosure and escalation of privilege. System software adversary with a privileged user combined with a high complexity attack may enable escalation of privilege. This result may potentially occur via local access when attack requirements are present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (high), integrity (high) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (low), integrity (low) and availability (none) impacts.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N
Attack vector
Local
Complexity
High
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 4% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IP
Intel(R) platforms ·
See references · source: vendor
TM
Tdx Module · Intel
through 1.5.28; through 1.5.28; through 2.0.16; through 2.0.16 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-20885
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-20885
Vendor Advisory
https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01436.html
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