CVE-2026-20262: CISCO Catalyst SD-WAN Flaw Under Active Targeted Exploitation

Security Affairs

June 16, 2026 at 10:53 AM

Actively Exploited

Overview

Cisco has issued a warning about a vulnerability in its Catalyst SD-WAN Manager, designated CVE-2026-20262. This flaw allows attackers to write arbitrary files through the web interface, potentially compromising the system's integrity. Cisco confirmed that this vulnerability is currently being actively exploited, which raises significant concerns for organizations using affected systems. The vulnerability has a CVSS score of 6.5, indicating a moderate level of risk. Companies utilizing the Catalyst SD-WAN Manager should prioritize assessing their systems for this vulnerability and implement necessary security measures to protect against potential attacks.

Key Takeaways

Active Exploitation: This vulnerability is being actively exploited by attackers. Immediate action is recommended.
Affected Systems: Cisco Catalyst SD-WAN Manager
Action Required: Organizations should apply security patches provided by Cisco for the Catalyst SD-WAN Manager.
Timeline: Newly disclosed

Original Article Summary

Cisco warned that CVE-2026-20262, a Catalyst SD-WAN Manager vulnerability allowing arbitrary file writes, is being actively exploited. Cisco confirmed active exploitation of CVE-2026-20262, an arbitrary file write vulnerability affecting Catalyst SD-WAN Manager. CVE-2026-20262 (CVSS score of 6.5) is an arbitrary file write vulnerability in the web interface of Cisco Catalyst SD-WAN Manager. The flaw is […]

Impact

Cisco Catalyst SD-WAN Manager

Exploitation Status

This vulnerability is confirmed to be actively exploited by attackers in real-world attacks. Organizations should prioritize patching or implementing workarounds immediately.

Timeline

Newly disclosed

Remediation

Organizations should apply security patches provided by Cisco for the Catalyst SD-WAN Manager. Additionally, administrators are advised to review access controls and monitor logs for any suspicious activity related to file writes. Regular updates and security assessments should be conducted to ensure the system's integrity.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to CVE, Cisco, Vulnerability.

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