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CVE-2023-2868: Barracuda Networks ESG Appliance Improper Input Validation Vulnerability

criticalknown exploitedpublic exploitCVE-2023-2868
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.
Barracuda Email Security Gateway (ESG) appliance contains an improper input validation vulnerability of a user-supplied .tar file, leading to remote command injection.

CSIRTS triage

vendor: Barracuda Networksproduct: Email Security Gateway (ESG)Remote code execution
What
Barracuda ESG appliance contains an improper input validation vulnerability leading to remote command injection.
Who is affected
Deployments of Barracuda ESG are affected by this vulnerability.
Urgency
Remediation is urgent due to active exploitation and critical severity.
Action
Apply the latest security updates to Barracuda ESG to mitigate the vulnerability.

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
2023-05-26
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2023-2868

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-2023-2868coverage & exploitation statusNVD · CVE.org

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