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Apexward Pulse
Type Vulnerability

Cisco · Path traversal

Cisco Secure Email Gateway Relative Path Traversal Vulnerability

1 sourceCVE-2026-76519

At a glance

High
Suggested 24-hour window, counted from the last update
ActiveConfirmed in-the-wild exploitation
Evidence-weighted, not popularity
Signal

Actively exploited in the wild — prioritise confirming exposure.

Why High

High rather than Critical: exposure is scored at a default because we cannot see your systems or suppliers. If you run or depend on Cisco Secure Email Gateway Virtual Appliance C100v, treat it as Critical.

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 Cisco Secure Email Gateway Virtual Appliance C100v, 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 still not patched, what mitigation is in place, and what is holding the fix up?

Next steps

  1. Confirm exposure and remediation status for affected products

Summary

  • Cisco Secure Email Gateway contains a relative path traversal vulnerability that could allow an unauthenticated, remote attacker to write arbitrary files on the underlying operating system.

Products and services involved

10 reports

Part of Gartner Report: The Attack Path is Closing Faster than Most Teams Can Patch

All 10 reports in this story

Pulse

Last checked 3d ago · Recheck overdue since 6 Nov 2026, 10:34 UK time

  1. Story15 Oct 2026, 00:32 UK time · 15 Oct

    Linked reporting from CISA (official authority).

    Read source (CISA Known Exploited Vulnerabilities)
  2. Signal5 Nov 2026, 10:34 UK time · 3d ago

    in the next 30 days first recorded at 2.2% (lower likelihood signal, not confirmed exploitation).

2 entries 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

    Cisco Secure Email Gateway Relative Path Traversal Vulnerability

  • ConfirmedSummary fact75% confidence

    Cisco Secure Email Gateway contains a relative path traversal vulnerability that could allow an unauthenticated, remote attacker to write arbitrary files on the underlying operating system.

  • ConfirmedCVE identifier95% confidence

    Event involves CVE-2026-76519

  • ConfirmedKnown-exploited catalogue98% confidence

    CVE-2026-76519 is confirmed as exploited in the wild (US known-exploited catalogue)