How severe is CVE-2026-20775?

CVE-2026-20775 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-20775 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-20775?

CVE-2026-20775 affects Intel Tdx Module. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-20775?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2026-20775 published?

CVE-2026-20775 was published on 2026-08-11 and last updated on 2026-08-31.

CVE-2026-20775

CVE-2026-20775 is a medium-severity vulnerability in Intel Tdx Module with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-248.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v4: 6.8
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-248
Affected product: Intel Tdx Module
Published: 2026-08-11
Last modified: 2026-08-31

Description

Uncaught exception for some Intel(R) TDX modules within Ring 0: Trust Domain may allow a denial of service. System software adversary with a privileged user combined with a high complexity attack may enable denial of service. 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 (none), integrity (none) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (high) impacts.

Frequently asked questions

What is CVE-2026-20775?: Uncaught exception for some Intel(R) TDX modules within Ring 0: Trust Domain may allow a denial of service. System software adversary with a privileged user combined with a high complexity attack may enable denial of service. 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 (none), integrity (none) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (high) impacts.
How severe is CVE-2026-20775?: CVE-2026-20775 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-20775 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-20775?: CVE-2026-20775 affects Intel Tdx Module. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-20775?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-20775 published?: CVE-2026-20775 was published on 2026-08-11 and last updated on 2026-08-31.

References

https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01436.html

Affected products (1)

cpe:2.3:o:intel:tdx_module:*:*:*:*:*:*:*:*

More vulnerabilities in Intel Tdx Module

CVE-2023-45745 — High (CVSS 7.9): Improper input validation in some Intel(R) TDX module software before version 1.5.05.46.698 may allow a privileged user…
CVE-2026-20885 — High (CVSS 7.2): Improper authentication in the Intel(R) TDX module for some Intel(R) platforms within Ring 0: Trust Domain may allow an…
CVE-2024-21801 — High (CVSS 7.1): Insufficient control flow management in some Intel(R) TDX module software before version 1.5.05.46.698 may allow a…
CVE-2024-39283 — Medium (CVSS 6.0): Incomplete filtering of special elements in Intel(R) TDX module software before version TDX_1.5.01.00.592 may allow an…
CVE-2023-47855 — Medium (CVSS 6.0): Improper input validation in some Intel(R) TDX module software before version 1.5.05.46.698 may allow a privileged user…
CVE-2024-33607 — Medium (CVSS 5.6): Out-of-bounds read in some Intel(R) TDX module software before version TDX_1.5.07.00.774 may allow an authenticated…

All CVEs affecting Intel Tdx Module →

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