CVE Watch—

CVE-2021-27877

Veritas Backup Exec Agent Improper Authentication Vulnerability

CVSS

—

No CVSS

EPSS

64.9%

p99

KEV

YES

Apr 7, 2023

Exploit Today

0-100

Published: — · Last modified: —

EPSS · 30d

64.9%EPSS · 30 days64.9%

2026-06-302026-07-16

KEV catalog record

Product

Veritas / Backup Exec Agent

Vulnerability

Veritas Backup Exec Agent Improper Authentication Vulnerability

Added to KEV

Apr 7, 2023

Remediate by

Apr 28, 2023

Known ransomware use

Yes

Summary description

Veritas Backup Exec (BE) Agent contains an improper authentication vulnerability that could allow an attacker unauthorized access to the BE Agent via SHA authentication scheme.

Required action

Apply updates per vendor instructions.

Notes

https://www.veritas.com/support/en_US/security/VTS21-001; https://nvd.nist.gov/vuln/detail/CVE-2021-27877

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