Trusted Computing Group (TCG) Trusted Platform Module Library Family 2.0 Library…
Priority LOW 31CWE-665Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- High
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
Trusted Computing Group (TCG) Trusted Platform Module Library Family 2.0 Library Specification Revisions 1.38 through 1.59 has Incorrect Access Control during a non-orderly TPM shut-down that uses USE_DA_USED. Improper initialization of this shut-down may result in susceptibility to a dictionary attack.
Why it matters now
EPSS 0.003 22nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:trustedcomputinggroup:trusted_platform_module:2.0:revision_1.38:*:*:*:*:*:* | 2.0 revision_1.38 | Vulnerable | Trusted Computing Group |
| cpe:2.3:a:trustedcomputinggroup:trusted_platform_module:2.0:revision_1.40:*:*:*:*:*:* | 2.0 revision_1.40 | Vulnerable | Trusted Computing Group |
| cpe:2.3:a:trustedcomputinggroup:trusted_platform_module:2.0:revision_1.59:*:*:*:*:*:* | 2.0 revision_1.59 | Vulnerable | Trusted Computing Group |
- cpe:2.3:a:trustedcomputinggroup:trusted_platform_module:2.0:revision_1.38:*:*:*:*:*:* Versions 2.0 revision_1.38 Vulnerable ·Trusted Computing Group
- cpe:2.3:a:trustedcomputinggroup:trusted_platform_module:2.0:revision_1.40:*:*:*:*:*:* Versions 2.0 revision_1.40 Vulnerable ·Trusted Computing Group
- cpe:2.3:a:trustedcomputinggroup:trusted_platform_module:2.0:revision_1.59:*:*:*:*:*:* Versions 2.0 revision_1.59 Vulnerable ·Trusted Computing Group
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-26933
- 2026-10-03 Alias added: GHSA-988w-p627-h6w6
References
More Trusted Computing Group Trusted Platform Module vulnerabilities
- TI-2023-00962 TPM2.0 vulnerable to out-of-bounds write CVSS 3.1HIGH 7.8
- TI-2023-00963 TPM2.0 vulnerable to out-of-bounds read CVSS 3.1MEDIUM 5.5
- TI-2018-04880 An issue was discovered that affects all producers of BIOS firmware who make a certain… CVSS 3.0HIGH 7.1
Sources
- CVE-2020-26933 · CVE Program
- CVE-2020-26933 · NVD
- FIRST EPSS
- GHSA-988w-p627-h6w6 · GitHub Advisory Database · CC BY 4.0
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