This weekWhy this label: added to the catalog 26 days ago

CVE-2026-76504Cisco Catalyst SD-WAN Manager Hex Encoding Vulnerability

Product: Cisco Catalyst SD-WAN Manager
Added to CISA KEV: September 30, 2026
Deadline for US federal agencies: October 3, 2026
Known ransomware use: Not known
EPSS, next 30 days: 39%, higher than 98% of scored CVEs (Oct 25, 2026)
Weakness: CWE-177

What CISA says

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.

What CISA asks you to do

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Sources

Also exploited recently

Data from CISA's Known Exploited Vulnerabilities catalog (public domain) and FIRST EPSS, refreshed hourly. Rheono did not find or test this vulnerability; this page summarizes public sources.