Name: CVE-2021-27877: Undefined Security Weakness
Creator: Rapid7
Published: 2021-03-01T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2021-27877, CWE-287, Exploited in the Wild, CISA KEV Exploit, Metasploit Module, Used with Ransomware, CVSS 8.2, EPSS 0.29375, CISA KEV

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.

CVSS Details

CVSS 3.1 Base Score: 8.2
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Veritas Backup Exec Agent	—	Upgrade Veritas Backup Exec Agent to the latest version	Apr 14, 2025	Mar 1, 2021

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CVSS Details

Covered by Rapid7

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