vulnerability
Samba CVE-2020-27840: CVE-2020-27840 and CVE-2021-20277. Please see announcements for details.
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:N/I:N/A:P) | May 12, 2021 | May 12, 2021 | Jun 3, 2026 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
May 12, 2021
Added
May 12, 2021
Modified
Jun 3, 2026
Description
A flaw was found in samba. Spaces used in a string around a domain name (DN), while supposed to be ignored, can cause invalid DN strings with spaces to instead write a zero-byte into out-of-bounds memory, resulting in a crash. The highest threat from this vulnerability is to system availability.
Solutions
samba-upgrade-4_12_13samba-upgrade-4_13_6samba-upgrade-4_14_1
Rapid7 Labs
2026 Global Threat Landscape Report
The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.