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CVE-2021-27877

HIGHCISA KEV

8.2

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.

CVE Details

CVSS v3.1 Score8.2

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published3/1/2021

Last Modified11/3/2025

Sourcekev

Honeypot Sightings0

CISA KEV

VendorVeritas

ProductBackup Exec Agent

Vulnerability NameVeritas Backup Exec Agent Improper Authentication Vulnerability

KEV Date Added2023-04-07

Remediation Due Date2023-04-28

Ransomware UseKnown

Affected Products

veritas:backup_exec

References

http://packetstormsecurity.com/files/168506/Veritas-Backup-Exec-Agent-Remote-Code-Execution.html(cve@mitre.org)

https://www.veritas.com/content/support/en_US/security/VTS21-001#issue1(cve@mitre.org)

http://packetstormsecurity.com/files/168506/Veritas-Backup-Exec-Agent-Remote-Code-Execution.html(af854a3a-2127-422b-91ae-364da2661108)

https://www.veritas.com/content/support/en_US/security/VTS21-001#issue1(af854a3a-2127-422b-91ae-364da2661108)

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27877(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

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