Email Security Gateway 600 Firmware vulnerabilitiesAnd the versions its exploited flaws hit.
Email Security Gateway 600 Firmware is made by Barracuda. We track 2 published vulnerabilities in it, across 2 versions. 3 of them are on the list of flaws known to be exploited, the newest added on 10 November 2026. If you run Email Security Gateway 600 Firmware, check your version against the exploited flaws below and patch those first.
The most recent Email Security Gateway 600 Firmware flaw added to the known-exploited list is CVE-2026-111560, on 10 November 2026. We keep watching the known-exploited list.
Which versions of Email Security Gateway 600 Firmware do the exploited flaws hit?
Each exploited flaw lists the versions it affects, usually as ranges. "before 9.4.0.029" means every version up to, but not including, 9.4.0.029. Find your version, then patch.
- CVE-2026-111560Exploited list, 10 Nov 2026
Barracuda Networks Multiple Products OS Command Injection Vulnerability
before 9.4.0.029 - CVE-2026-116606Exploited list, 10 Nov 2026
Barracuda Networks Email Security Gateway (ESG) Authentication Bypass Using an Alternate Path or Channel Vulnerability
before 9.4.0.030 - CVE-2023-2868Exploited list, 26 May 2023
Barracuda Networks ESG Appliance Improper Input Validation Vulnerability
5.1.3.001 to 9.2.0.006
Which Email Security Gateway 600 Firmware vulnerabilities are being exploited?
3 flaws are on the government list of vulnerabilities known to be exploited. These are the ones criminals are using now, so they go first, whatever their severity score says.
- 8.6Barracuda Networks Multiple Products OS Command Injection Vulnerability
Barracuda Networks Email Security Gateway (ESG), Load Balancer, Application Delivery Controller (ADC), Message Archiver (BMA), WAF Control Center (WCC), Web Application Firewall (WAF), and Web Security Gateway (WSG)...
- 9.3Barracuda Networks Email Security Gateway (ESG) Authentication Bypass Using an Alternate Path or Channel Vulnerability
Barracuda Networks Email Security Gateway (ESG) contains an authentication bypass using an alternate path or channel that could allow an unauthenticated remote attacker to invoke a configuration-import function and...
- 9.4Barracuda Networks ESG Appliance Improper Input Validation Vulnerability
Barracuda Email Security Gateway (ESG) appliance contains an improper input validation vulnerability of a user-supplied .tar file, leading to remote command injection.
Which Email Security Gateway 600 Firmware flaws are most likely to be used?
Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.
- 87%
A remote command injection vulnerability exists in the Barracuda Email Security Gateway (appliance form factor only) product effecting versions 5.1.3.001-9.2.0.006.
- 45%CVE-2023-7102Critical
Use of a Third Party library produced a vulnerability in Barracuda Networks Inc.
- 8.9%
An authentication bypass in Barracuda Email Security Gateway versions earlier than 9.4.0.030 allows an unauthenticated remote attacker to invoke a configuration-import function and restore a crafted, compatible...
- 6.2%
Improper neutralization of shell metacharacters in the timezone configuration field in certain Barracuda appliance products using common Barracuda code allows an authenticated administrator to inject OS commands that...
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1 flaw being exploited affects software Acme tracks
Barracuda Networks Email Security Gateway (ESG), Load Balancer, Application Delivery Controller (ADC), Message Archiver (BMA), WAF Control Center (WCC), Web Application Firewall (WAF), and Web Security Gateway (WSG) contain an OS command injection vulnerability. This vulnerability could allow an authenticated administrator to inject OS commands that execute with root privileges when the crafted timezone value is subsequently processed. This vulnerability can be chained with CVE-2026-116606
- Matched to
- Email Security Gateway 600 Firmware on Acme's software list
- What to do
- Patch first, then check for signs of use
Sent to the alert recipients Acme chose. Also in the app and to Acme's webhook.
We track 2 published vulnerabilities listed under the name Email Security Gateway 600 Firmware, across 2 versions. The most recent Email Security Gateway 600 Firmware flaw added to the known-exploited list is CVE-2026-111560, on 10 November 2026.
3 are on the list of flaws known to be exploited. The most recently added are CVE-2026-111560, CVE-2026-116606 and CVE-2023-2868.
Each flaw names its own versions, usually as ranges. The newest, CVE-2026-111560, affects before 9.4.0.029. The versions for every exploited flaw are listed on this page.
Create a EdgeProtect account and track Email Security Gateway 600 Firmware. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook.