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Apexward Pulse
Type Vulnerability

Barracuda Networks · Auth bypass

Barracuda Networks Email Security Gateway (ESG) Authentication Bypass Using an Alternate Path or Channel Vulnerability

1 sourceCVE-2026-116606CVE-2026-111560

At a glance

Medium
7-day window, from the last update
ActiveConfirmed in-the-wild exploitation
Evidence-weighted, not popularity
Signal

Actively exploited in the wild — prioritise confirming exposure.

Why Medium

Medium rather than High: exposure is scored at a default because we cannot see your systems or suppliers. If you run or depend on Barracuda Networks Barracuda Email Security Gateway (ESG), treat it as High.

Briefing

There is no written leader briefing for this story yet. These questions come from the facts we hold.

Questions to ask IT

  • Do we run Barracuda Networks Barracuda Email Security Gateway (ESG) and Palo Alto Networks, and which versions?
  • Is any of it reachable from the internet?
  • Have we checked whether it has already been used against us?
  • If it is not yet patched, what mitigation is in place, and will the fix be done by 17 Nov?

Next steps

  1. Confirm exposure and remediation status for affected products

Summary

  • 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 restore a crafted, compatible backup archive, resulting in unauthorised modification of the appliance’s global configuration.
  • CVE-2026-116606 is confirmed as exploited in the wild (US known-exploited catalogue)
  • CVE-2026-116606 has an estimated ~1.6% chance of attack in 30 days (76th percentile) as of 2026-11-10 — probability signal, not confirmed exploitation
  • Authoritative catalogues report active exploitation of this vulnerability.

Products and services involved

Pulse

Last change 27m ago · Next recheck 11 Nov 2026, 03:32 UK time

  1. Story10 Nov 2026, 21:32 UK time · 27m ago

    Linked reporting from CISA (official authority).

    Read source (CISA Known Exploited Vulnerabilities)

1 entry so far. The timeline chart appears once this story has more history.

Sources

How we know

Statements extracted from sources. Higher confidence means stronger corroboration.

  • ConfirmedHeadline90% confidence

    Barracuda Networks Email Security Gateway (ESG) Authentication Bypass Using an Alternate Path or Channel Vulnerability

  • ConfirmedSummary fact75% confidence

    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 restore a crafted, compatible backup archive, resulting in unauthorised modification of the appliance’s global configuration.

  • ConfirmedCVE identifier95% confidence

    Event involves CVE-2026-116606

  • ConfirmedKnown-exploited catalogue98% confidence

    CVE-2026-116606 is confirmed as exploited in the wild (US known-exploited catalogue)

  • ConfirmedEstimated attack likelihood95% confidence

    CVE-2026-116606 has an estimated ~1.6% chance of attack in 30 days (76th percentile) as of 2026-11-10 — probability signal, not confirmed exploitation

  • ConfirmedCVE identifier95% confidence

    Event involves CVE-2026-111560

  • ConfirmedKnown-exploited catalogue98% confidence

    CVE-2026-111560 is confirmed as exploited in the wild (US known-exploited catalogue)

  • ConfirmedEstimated attack likelihood95% confidence

    CVE-2026-111560 has an estimated ~1.1% chance of attack in 30 days (64.8th percentile) as of 2026-11-10 — probability signal, not confirmed exploitation