UpHeron
All vulnerabilities

Servers and applications

CVE-2021-43566

All versions of Samba prior to 4.13.16 are vulnerable to a malicious client using an SMB1 or NFS race to allow a directory to be created in an area of the server file system not exported under the share definition. Note that SMB1 has to be enabled, or the share also available via NFS in order for this attack to succeed.

Severity
Low 2.5
Published
11 Jan 2022
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
4.13.16
Sources
NVD

Affected software

SoftwareAffected versions
SambaServers and applications · cpe:a:samba:samba
  • Every version before 4.13.16

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-43566
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-43566