CVE-2021-38505

Microsoft introduced a new feature in Windows 10 known as Cloud Clipboard which, if enabled, will record data copied to the clipboard to the cloud, and make it…

published December 8, 2021

CVSS
—
EPSS
1%
Percentile
65.0
In the wild
Unconfirmed
What it is

Microsoft introduced a new feature in Windows 10 known as Cloud Clipboard which, if enabled, will record data copied to the clipboard to the cloud, and make it available on other computers in certain scenarios. Applications that wish to prevent copied data from being recorded in Cloud History must use specific clipboard formats; and Firefox before versions 94 and ESR 91.3 did not implement them. This could have caused sensitive data to be recorded to a user's Microsoft account. *This bug only affects Firefox for Windows 10+ with Cloud Clipboard enabled. Other operating systems are unaffected.*. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01084 · 65.0th percentile
Published
2021-12-08T21:21Z
EPSS history
Timeline
  • 08 DEC 21:21Z
    Microsoft introduced a new feature in Windows 10 known as Cloud Clipboard which, if enabled, will record data copied to the clipboard to the cloud, and make it…
    cvelistv5