First published Oct 14, 2026, 7:51:15 PM UTC · Last updated Oct 14, 2026, 7:51:15 PM UTC

CVE-2026-76519: Cisco Secure Email Gateway Relative Path Traversal Vulnerability

The excerpt describes a relative path traversal vulnerability in Cisco Secure Email Gateway that could let an unauthenticated remote attacker write arbitrary files on the underlying operating system. It calls for applying vendor-directed mitigations and following applicable CISA guidance.

Illustrative image: Diagram of: Cybersecurity Strategy 5 Layout CS5L Shows 5 Layers and resultant Vulnerability, Compliance and Risk Management — Sean p connors/Wikimedia Commons, CC BY-SA 3.0

Why it matters

The excerpt instructs stakeholders to assess asset exposure and apply mitigations or discontinue use if they are unavailable.

Categories: technology

Generated scores

Scores are based on the cited reporting and use a 1–10 scale. Read the methodology.

Confidence: 5/10How certain the assessment is based on the clarity and evidence in the cited reporting.
Geographic reach: 1/10How widely the event reaches, from a local area (1) to worldwide impact (10).
Global importance: 3/10The event's broader significance, from limited importance (1) to major global importance (10).
Impact magnitude: 4/10The scale or severity of the real-world impact, from minor (1) to extreme (10).
Positivity: 2/10How harmful or beneficial the event is, from strongly harmful (1) to strongly positive (10).
Urgency: 5/10How time-sensitive the event is, from low urgency (1) to immediate attention needed (10).

Primary official sources

CISA Known Exploited Vulnerabilities CVE-2026-76519: Cisco Secure Email Gateway Relative Path Traversal Vulnerability

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