CyberRota Analysis
This is a medium severity vulnerability with a CVSS score of 6.8. It affects Windows.
CVE
CVE-2021-20254
Severity
MEDIUM
CVSS
6.8
EPSS
1.62%
Windows
Original NVD Description
A flaw was found in samba. The Samba smbd file server must map Windows group identities (SIDs) into unix group ids (gids). The code that performs this had a flaw that could allow it to read data beyond the end of the array in the case where a negative cache entry had been added to the mapping cache. This could cause the calling code to return those values into the process token that stores the group membership for a user. The highest threat from this vulnerability is to data confidentiality and integrity.
Related CVEs
Other vulnerabilities affecting the same vendor(s)