CVE-2026-20303
A remote, authenticated attacker can exploit multiple vulnerabilities in Cisco Catalyst SD-WAN Manager to execute arbitrary code, bypass security measures, disclose confidential information, manipulate data, or elevate privileges.
CSIRTS triage
- What
- Multiple vulnerabilities allow authenticated attackers to execute arbitrary code, bypass security measures, disclose information, manipulate data, and escalate privileges.
- Who is affected
- Cisco Catalyst SD-WAN Manager deployments accessible to authenticated users.
- Urgency
- High severity with authenticated code execution and privilege escalation requires urgent patching.
- Action
- Apply available Cisco Catalyst SD-WAN Manager security updates.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.29% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 21% of all EPSS-scored CVEs.
Advisory coverage (6)
- high[NEW] [high] Cisco Catalyst SD-WAN Manager: Multiple Vulnerabilitiescert-bund · 2026-08-06
- unknownNCSC-2026-0277 [1.00] [M/H] Vulnerabilities patched in Cisco Catalyst SD-WANncsc-nl · 2026-08-06
- unknownMultiple vulnerabilities in Cisco products (August 6, 2026)cert-fr-avis · 2026-08-06
- criticalCVE-2026-20303: As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Cat…nvd · 2026-08-05
- criticalCisco Advance Notification for Publication of August 5, 2026, Security Advisoriescisco-psirt · 2026-08-05
- criticalCisco Catalyst SD-WAN Software Security Hardening Release: August 2026cisco-psirt · 2026-08-05
External references
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