CVE-2023-2868

Barracuda Networks ESG Appliance Improper Input Validation Vulnerability

n/a

CVSS

87.4%

EPSS (exploit prob.)

99.7%

EPSS percentile

Yes

Actively exploited

Ransomware use

2023-05-26

Added

MITRE ATT&CK techniques

How this vulnerability maps to adversary behaviour, from the Center for Threat-Informed Defense's public CVE→ATT&CK mappings. Use it to check whether your detections already cover the technique.

Technique	Name	Relationship
T1566.001	Spearphishing Attachment	exploitation technique
T1059	Command and Scripting Interpreter	primary impact
T1041	Exfiltration Over C2 Channel	secondary impact
T1105	Ingress Tool Transfer	secondary impact

Summary

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

Affected software

Vendor: Barracuda Networks · Product: Email Security Gateway (ESG) Appliance

Weakness types (CWE):

What to do

This vulnerability appears in CISA's Known Exploited Vulnerabilities catalog, meaning it is being exploited in the wild. Prioritize patching affected systems and verify exposure across your estate.

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All information is aggregated from public sources for awareness only and does not constitute an accusation or a security assessment. No personal data or credentials are published.