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CVE-2026-111560

OS Command Injection in Barracuda Appliances

  • High 8.6
  • Exploited: added to CISA KEV 10 Nov 2026

Description

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 execute with root privileges when the crafted timezone value is subsequently processed.

Key facts

Published
2 Nov 2026
Last changed
11 Nov 2026
Assigned by
Mandiant
KEV added
10 Nov 2026
KEV fix due
13 Nov 2026
EPSS
9.082% likely to be exploited in the next 30 days, higher than 95.377% of CVEs (scores for 15 Nov 2026)
SSVC (CISA)
Exploitation: active; Automatable: no; Technical impact: total

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

  • 8.6CVSS 4.0, Highfrom the CNA (Mandiant)CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

What to do

  • Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.CISA KEV required action

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

CAPEC-88 OS Command Injection (CNA impact statement)

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

VendorProductVersions
Barracuda NetworksBarracuda Email Security Gateway (ESG)
  • Default status: unaffected
  • 0 up to and including 9.4.0.27 (affected)
Barracuda NetworksBarracuda Load Balancer Application Delivery Controller (ADC)
  • Default status: unaffected
  • 0 up to and including 6.4.0 (affected)
Barracuda NetworksBarracuda Web Application Firewall (WAF)
  • Default status: unaffected
  • 0 up to and including 11.0.1 (affected)
Barracuda NetworksBarracuda Web Security Gateway (WSG)
  • Default status: unaffected
  • 0 up to and including 16.1.100.100 (affected)
Barracuda NetworksBarracuda Message Archiver (BMA)
  • Default status: unaffected
  • 0 up to and including 5.5.4.0 (affected)
Barracuda NetworksBarracuda WAF Control Center (WCC)
  • Default status: unaffected
  • 0 up to and including 2.2.1 (affected)

Timeline

  1. 2 Nov 2026 Published
  2. 10 Nov 2026 CVE-2026-111560 added to CISA KEV
  3. 10 Nov 2026 Added to the CISA KEV catalogue

Weakness

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Related coverage

References