MITRE: CVE-2026-6727 TPM 2.0 RSA OAEP Timing Side-Channel Vulnerability

CVE-2026-6727 is an information disclosure vulnerability in Windows TPM (rated Important, CVSS 5.9).

1 version

Facts

Microsoft id
CVE-2026-6727
Products
Windows TPM
Severity
Important
Impact
Information Disclosure
CVSS
5.9
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Less Likely
Customer action required
Yes
Release
2026-Aug
Assigned by
MITRE
Weakness
CWE-208: Observable Timing Discrepancy
MSRC revision
1.0
First captured by us
(from our first import of this list)
Microsoft last modified
Source
Security updates · open the original at Microsoft

Microsoft's revision notes

  1. Revision 1.0, 2026-08-11: Information published.

Microsoft says

CVE-2026-6727 is an Information Disclosure vulnerability in the TPM 2.0 reference implementation involving an RSA OAEP timing side channel.

Security updates,

Read Microsoft's full post

What Microsoft changed

One version so far. If Microsoft edits it, each change shows here with what was removed and added.

  1. First version we captured ·

    The text as we first saw it

    Seen by us · Microsoft's timestamp · Microsoft's page

Mentioning the same Microsoft ids

Last updated