No. CVE-2026-76504
Attackers can get admin access to Cisco SD-WAN Manager
Yes. Attackers are using this right now.
Companies managing their networks with Cisco Catalyst SD-WAN Manager.
What to do
Apply Cisco's security update for Catalyst SD-WAN Manager.
Attack likelihood is EPSS, a daily estimate from FIRST.org of how likely this bug is to be used in attacks in the next 30 days.
The official description
Cisco Catalyst SD-WAN Manager contains a hex encoding vulnerability that could allow an unauthenticated, remote attacker to access an affected system with privileges of the admin user due to improper handling of URI encoding in an HTTP request.
For your tech helper or AI assistant
A read-only checklist. Paste it into Claude, ChatGPT or a coding agent; it only looks and changes nothing.
Read-only check, change nothing, send nothing anywhere.
Is Cisco Catalyst SD-WAN Manager (CVE-2026-76504) installed or running on this machine or in this project?
1. Find every copy and its version (apps, packages, containers, lockfiles).
2. Compare each version against the vendor's fixed version for CVE-2026-76504. Quote the vendor page you used.
3. Report a table: where, version, fixed version, status (exposed / fixed / not installed / unsure).
4. List the exact update steps, but do not run them.Code on GitHub
Repos named after this bug. Some are scanners or write-ups, some are working attack code. Do not run them on a machine you care about.
- ShadowForge-Cyber/CVE-2026-76504-Proof-of-concept · 2 stars
- pastelghost3/cve-2026-76504-nuclei · 0 stars
- maxprog-svg/CVE-2026-76504-Cisco · 0 stars