Veritas Backup Exec Agent
YES - ON THE CISA KEV LIST
CVE-2021-27877
Veritas Backup Exec Agent Improper Authentication Vulnerability
overdue since 2023-04-28
Veritas: 3 entries (0.2% of all KEV entries are from this vendor); 0 added in 2026.
BOD 26-04 note: this is the date printed in the CISA catalog. A federal agency's actual deadline is set by its SSVC tier - Act (3 days), Attend (14 days), Track (60 days), or the next scheduled upgrade - counted from the KEV listing date or the date the vulnerability is identified in its environment, whichever comes first. Use the tier helper on each CVE page for your own window.
Your BOD 26-04 window (SSVC tier helper)
Your remediation window ends:
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 (CISA)
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
References
Other KEV entries for this vendor: Veritas
- CVE-2021-27876 - Backup Exec Agent (2023-04-07)
- CVE-2021-27878 - Backup Exec Agent (2023-04-07)
Go deeper
KEV deadlines are a governance problem as much as a patching one. TrebSec's AI governance packs help small teams document, assign, and evidence exactly this work.
AI Governance Policy Pack - $79 AI Vendor Workbook - $49 Both packs bundled - $99