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CVE-2023-2868

97
FAUCET Score

CVE-2023-2868 is a critical remote command injection vulnerability affecting Barracuda Email Security Gateway appliances (versions 5.1.3.001-9.2.0.006). This flaw, stemming from inadequate sanitization of .tar file names, allows remote attackers to execute system commands with high privileges. With a CVSS score of 9.8 (Critical), it poses a severe risk of complete compromise (confidentiality, integrity, availability). This vulnerability is actively exploited in the wild, has a high EPSS score, and has garnered significant community discussion and media coverage, despite no public exploit code being available.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.1.3.001, <= 9.2.0.006CPE matchmatch criteria
cpe:2.3:o:barracuda:email_security_gateway_300_firmware:*:*:*:*:*:*:*:*
>= 5.1.3.001, <= 9.2.0.006CPE matchmatch criteria
cpe:2.3:o:barracuda:email_security_gateway_400_firmware:*:*:*:*:*:*:*:*
>= 5.1.3.001, <= 9.2.0.006CPE matchmatch criteria
cpe:2.3:o:barracuda:email_security_gateway_600_firmware:*:*:*:*:*:*:*:*
>= 5.1.3.001, <= 9.2.0.006CPE matchmatch criteria
cpe:2.3:o:barracuda:email_security_gateway_800_firmware:*:*:*:*:*:*:*:*
>= 5.1.3.001, <= 9.2.0.006CPE matchmatch criteria
cpe:2.3:o:barracuda:email_security_gateway_900_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.4CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
5.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
87.45%
Probability of exploitation in next 30 days
EPSS Percentile
99.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Added to KEV · May 26, 2023
Metasploit: Barracuda ESG TAR Filename Command Injection · May 23, 2023
This CVE's current EPSS score of 0.8745 is in the 99th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
status.barracuda.com / incidents/34kx82j5n4q9
Vendor Advisory
barracuda.com / company/legal/esg-vulnerability
MitigationVendor Advisory