CISA KEV catalog
Confirmed active exploitation.
Listed in CISA's catalog of Known Exploited Vulnerabilities: attackers are using it in real attacks. Patch it with priority.
- Name
- Veritas Backup Exec Agent Improper Authentication Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- Apply updates per vendor instructions.
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.
Affected products
veritas: backup exec
References5
- www.veritas.com/content/support/en_US/security/VTS21-001#issue1 Vendor Advisory
- www.veritas.com/content/support/en_US/security/VTS21-001#issue1 Vendor Advisory
- packetstormsecurity.com/files/168506/Veritas-Backup-Exec-Agent-… ExploitThird Party AdvisoryVDB Entry
- packetstormsecurity.com/files/168506/Veritas-Backup-Exec-Agent-… ExploitThird Party AdvisoryVDB Entry
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=… US Government Resource
Metrics
- CVSS 3.1
-
9.8
CRITICAL
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 65% percentile: 99 · as of 2 November 2026
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