Live › vulnerability › CVE-2021-27878
Go to dashboardVeritas Backup Exec Agent contains a command execution flaw in its data management protocol handling. An attacker can send a crafted protocol command to run arbitrary commands on the machine running the agent.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 3h before NVD. All times on this page are UTC.
Apply updates per vendor instructions.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| Veritas Backup Exec Agent | vendor | – | – |
| veritas backup exec | vendor | < 21.2 | 21.2 |
Unknown from the sources.
Apply the updates per the vendor instructions (Veritas advisory not fetched; unknown which version is fixed).
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
An issue was discovered in Veritas Backup Exec before 21.2. The communication between a client and an Agent requires successful authentication, which is typically completed over a secure TLS communication. However, due to a vulnerability in the SHA Authentication scheme, an attacker is able to gain unauthorized access and complete the authentication process. Subsequently, the client can execute data management protocol commands on the authenticated connection. The attacker could use one of these commands to execute an arbitrary command on the system using system privileges.
This page as .md · .json · in your agent: get_signal("CVE-2021-27878")
CISA KEV catalog, Creative Commons 0 · NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.