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CVE-2021-27878: Veritas Backup Exec Agent Command Execution Vulnerability

criticalknown exploitedpublic exploitCVE-2021-27878
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Veritas Backup Exec (BE) Agent contains a command execution vulnerability that could allow an attacker to use a data management protocol command to execute a command on the BE Agent machine.

CSIRTS triage

vendor: Veritasproduct: Backup ExecRemote code execution
What
Veritas Backup Exec Agent contains a command execution vulnerability.
Who is affected
Deployments of Veritas Backup Exec Agent.
Urgency
Remediation is urgent due to active exploitation and critical severity.
Action
Apply the latest security patch for Veritas Backup Exec.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2023-04-07
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2021-27878

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2021-27878coverage & exploitation statusNVD · CVE.org

Recent advisories for Veritas Backup Exec

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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