CVE-2021-27877

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Summary

CVECVE-2021-27877
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-03-01 22:15:00 UTC
Updated2022-09-27 20:15:00 UTC
DescriptionAn 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.

Risk And Classification

EPSS: 0.395000000 probability, percentile 0.972780000 (date 2026-04-01)

CISA KEV: Listed on 2023-04-07; due 2023-04-28; ransomware use Known

Problem Types: CWE-287

CISA Known Exploited Vulnerability

VendorVeritas
ProductBackup Exec Agent
NameVeritas Backup Exec Agent Improper Authentication Vulnerability
Required ActionApply updates per vendor instructions.
Noteshttps://www.veritas.com/support/en_US/security/VTS21-001; https://nvd.nist.gov/vuln/detail/CVE-2021-27877

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Veritas Backup Exec All All All All
Application Veritas Backup Exec All All All All

References

ReferenceSourceLinkTags
Veritas Backup Exec Agent Remote Code Execution ≈ Packet Storm MISC packetstormsecurity.com
Security Advisory for Backup Exec version 21.2 | Veritas™ MISC www.veritas.com Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
CISA Known Exploited Vulnerabilities catalog CISA www.cisa.gov kev

Legacy QID Mappings

  • 378370 Veritas Backup Exec Multiple Security Vulnerabilities (VTS21-001)
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