Quick answers
- Is CVE-2026-76519 exploited in the wild?
- Yes. CVE-2026-76519 is known to be exploited in the wild, first recorded on 14 October 2026. Treat it as urgent.
- How severe is CVE-2026-76519?
- Critical severity, published 14 October 2026.
- Which products and versions are affected?
- Cisco Secure Email Gateway.
- Is there a fix for CVE-2026-76519?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-76519 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-76519?
- Check whether you run Cisco Secure Email Gateway. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is a relative path traversal in Cisco Secure Email Gateway that permits an unauthenticated remote attacker to write arbitrary files on the underlying operating system via a crafted request. This could result in code execution or system takeover depending on file placement and permissions. The flaw is being actively exploited in the wild.
Affected products
- Cisco Secure Email Gateway
Timeline
- 2026-10-14: disclosed
- 2026-10-14: exploited