CVE-2020-26933: trustedcomputinggroup trusted_platform_module Improper Initialization
Vulnerability summary
CVE-2020-26933 is a high (CVSS 7.2) Improper Initialization vulnerability in trustedcomputinggroup trusted_platform_module. EPSS estimates a 0.30% chance of exploitation in the next 30 days, higher than 21.5% of scored vulnerabilities.
Timeline
- 18-11-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
3 scores · 2 sources · 2 versions- NVDNIST6.0MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:NDiffers
EPSS trend
Probability
0.30%
Chance of exploitation in the next 30 days
Percentile
22%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.30% on 22-09-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Trustedcomputinggroup1 product
- trusted_platform_module2.0:revision_1.38 | 2.0:revision_1.40 | 2.0:revision_1.59
1 vendor · 1 product
References
2 links- trustedcomputinggroup.org/wp-content/uploads/TCGVRT004-Advisory-FINAL.pdfX Refsource CONFIRMVendor Advisory