Exploited CVEs / Cisco / CVE-2026-20245
CVE-2026-20245
Cisco Catalyst SD-WAN Manager Improper Encoding or Escaping of Output Vulnerability. Exploitation in the wild is confirmed by CISA, not predicted. Federal agencies were required to remediate by 2026-06-23 (that deadline has passed); treat that date as the outer bound for your own environment. The fix is in the vendor advisory: Cisco Security Advisories (PSIRT), linked below.
Actively exploited Cisco Catalyst SD-WAN Manager vulnerability, High severity, CVSS 7.8. Added to the CISA KEV catalog 2026-06-09.
Risk summary
Updated July 26, 2026. Data refreshed on every build from MSRC, CISA KEV, and FIRST EPSS.
Senserva AI Opinion for CVE-2026-20245
CVE-2026-20245 lets an authenticated local attacker on Cisco Catalyst SD-WAN Manager (formerly vManage) run arbitrary commands as root by feeding the system a crafted file, thanks to improper output escaping. Because SD-WAN Manager is the control plane for your entire WAN fabric, root here means control over device configs and policy pushed to every managed edge. CISA added it to the KEV catalog on 2026-06-09, so this is confirmed exploited despite the modest 25 percent EPSS score.
Do this: Apply Cisco's fixed SD-WAN Manager release now and audit local account access plus recent file uploads on the manager for signs of abuse.
AI-generated from public data, 2026-07-21. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for CVE-2026-20245
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for CVE-2026-20245
Published and last-revised dates are authoritative, from Microsoft MSRC (or the CISA KEV date-added). Senserva additionally records day-to-day changes from 2026-07-07, refreshed several times a day; the change count reflects that forward-only tracking.
CISA required action
Federal (BOD 22-01) remediation due date: 2026-06-23 (past due).
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Official fix for CVE-2026-20245
The authoritative fix and affected-version list are published by the vendor. Find the Catalyst SD-WAN Manager advisory on Cisco Security Advisories (PSIRT).
Common questions about CVE-2026-20245
Is CVE-2026-20245 actively exploited?
Yes. CVE-2026-20245 was added to the CISA Known Exploited Vulnerabilities (KEV) catalog on 2026-06-09, which means exploitation in the wild has been confirmed, not predicted. Its EPSS 30-day exploitation probability is 25%.
What is the CISA deadline and required action for CVE-2026-20245?
CISA set the federal (BOD 22-01) remediation due date at 2026-06-23, which has passed; treat any unremediated system as overdue. The verbatim required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
What fixes CVE-2026-20245?
The authoritative fix is in the vendor advisory: see Cisco Security Advisories (PSIRT) for the patched Catalyst SD-WAN Manager versions and any workarounds. KEV listing makes this a fix-first item: patch it ahead of higher-CVSS issues nobody is exploiting.
Can I ask my own AI about CVE-2026-20245?
Yes. This page includes a free, ready-to-paste AI prompt containing CVE-2026-20245's key facts: severity, CVSS, EPSS, the KEV date, the CISA due date, and the required action. Copy it into Claude, ChatGPT, or Copilot; the data is refreshed twice a day (5 AM and 3 PM US Central).
More exploited Cisco CVEs
The newest Cisco entries on the CISA KEV catalog:
All Cisco exploited CVEs on one page: Cisco vulnerabilities actively exploited.
Authoritative references
Every actively exploited CVE, searchable with due dates and CSV export: the exploited-CVE tracker. The newest additions: exploited this week.
