CVE-2021-1656
lowpriority · track · 19EPSS 0.030 · 87 %ileexploit · PoCEURUUSgrimoire priorityP1 · Urgent
Exploitable?
Public exploit
1 exploit · PoC
Likely / severe?
3.01% (87th) EPSS
CVSS 2.1 · low
Who says so?
3 sources
cnnvd · enisa_euvd · fstec_bdu
EPSS · scored 2026-10-27
TPM Device Driver Information Disclosure Vulnerability
01
cvss
Technical severity, 0–10. One row per scoring source.
5.5
010
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 1.9–5.5
v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nsecondary · NVD / NIST USexploitability 1.8 · impact 3.6
v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nsecondary · secure@microsoft.com USexploitability 1.8 · impact 3.6
02
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
03
weaknesses
The CWE weakness classes this flaw belongs to.
04
exploits (1)
Public proof-of-concept and weaponised exploit code.
- waleedassar/CVE-2021-1656waleedassar/CVE-2021-1656PoC · poc_in_github
05
affected products (64)
Products and version ranges known to be affected.
showing 20 of 64
06
also known as (4)
Other names and identifiers for this entity.
07
sources
Which sources assert this record, and when.
08
references (7)
External citations — patches, advisories, analysis.
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-17007/CVE-2021-1656cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2021-1656cnnvd
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1656cnnvd
- https://vigilance.fr/vulnerability/Windows-vulnerabilities-of-January-2021-34298cnnvd
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-1656enisa_euvd
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-1656nvd
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1656nvd
scry
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