CRITICALCVSS v3.1 9.8Actively exploited · CISA KEV since 2023-05-26Vulnerability

CVE-2023-2868

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

Properties

Euvd product
Barracuda Email Security Gateway
Vulnerability name
Barracuda Networks ESG Appliance Improper Input Validation Vulnerability
First seen
2025-10-21T23:05:47+00:00
Cvss score
9.8
Epss score
0.86841
Last seen
2026-10-19T12:00:27+00:00
Due date
2023-06-16
Euvd assigner
Google
Retrieved at
2026-10-21T01:24:47+00:00
Exploited euvd since
2023-05-26T00:00:00+00:00
Src batch id
epss_history-20261020T103617Z-728ddd
Source url
https://epss.empiricalsecurity.com/epss_scores-2026-10-19.csv.gz
Date added
2023-05-26
Score
9.8
Euvd base score version
3.1
Fetched at
2026-10-20T10:36:20+00:00
Euvd vendor
Barracuda
Cvss vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
In Signal since
initial import (Sep 2026)
Euvd base score
9.4

Related Entities (22)

AFFECTS_PRODUCT (10)

→[Product]cpe:2.3:o:barracuda:email_security_gateway_900_firmware:*:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:barracuda:email_security_gateway_800:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:barracuda:email_security_gateway_600:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:barracuda:email_security_gateway_400:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:barracuda:email_security_gateway_900:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:barracuda:email_security_gateway_400_firmware:*:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:barracuda:email_security_gateway_800_firmware:*:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:barracuda:email_security_gateway_300:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:barracuda:email_security_gateway_300_firmware:*:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:barracuda:email_security_gateway_600_firmware:*:*:*:*:*:*:*:*

MENTIONED_IN (7)

→[Campaign]Unnamed campaign (ID 6997…)
→[Campaign]ClingSTUN Turns Vulnerable Edge Devices Into Attacker Infrastructure
→[Campaign]Lunex Uses BYOVD to Disable Security Monitoring and Deploy Persistent Stealer
→[Campaign]NightLedger Backdoor Deployed in Espionage Campaign Targeting the Middle East and Africa
→[Campaign]ClickFix-Themed Campaign Deploys Starland RAT and WLDR Framework
→[Campaign]One Email Closer to the Edge: UNK_MassTraction & the Physics of Exploitation
→[Campaign]2025 Cloud Threat Hunting and Defense Landscape

HAS_WEAKNESS (2)

→[Weakness]Improper Neutralization of Special Elements used in a Command ('Command Injection')
→[Weakness]Improper Input Validation

INVOLVES (2)

←[EmergentSignal]velocity_anomaly
←[Signal]kev_added · 2023-05-26

DESCRIBES (1)

←[KEVEntry]Barracuda Networks ESG Appliance Improper Input Validation Vulnerability

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CVE-2023-2868 (CVSS v3.1 9.8) — Ninja Signal Threat Intelligence | Ninja Signal