CVE-2021-27877
HighActively exploited (CISA KEV)Known to be used in ransomware campaigns
Description
An issue was discovered in Veritas Backup Exec before 21.2. It supports multiple authentication schemes: SHA authentication is one of these. This authentication scheme is no longer used in current versions of the product, but hadn't yet been disabled. An attacker could remotely exploit this scheme to gain unauthorized access to an Agent and execute privileged commands.
SeverityHigh
CVSS8.2
Exploit probability—
ProductVeritas Backup Exec Agent
PublishedMar 1, 2021
First seenMar 1, 2021
Added to KEVApr 7, 2023
How to fix
CISA required action
Apply updates per vendor instructions.
CISA due date: Apr 28, 2023Update
- veritas backup_exec21.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| veritas backup_exec | v < 21.2 | 21.2 |
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