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CVE-2021-27877

CISA KEV

Published April 7, 2023 · Updated April 3, 2026

high
Official 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.

Affected Products

VendorProduct
VeritasBackup Exec Agent

Patch Status

Patch by 2023-04-28

Recommended Actions

  1. Check if your systems use any of the affected products listed above.
  2. Apply vendor patches immediately if available.
  3. This vulnerability is in CISA's Known Exploited Vulnerabilities catalog — prioritize remediation.
  4. Monitor vendor advisories for updates and additional mitigations.
  5. Review logs for indicators of compromise related to CVE-2021-27877.