defense · TheHackerNews
Cisco released security updates for CVE-2026-20262, a medium-severity flaw (CVSS 6.5) in Catalyst SD-WAN Manager affecting multiple deployment types. The vulnerability stems from inadequate input validation during file upload operations, allowing authenticated remote attackers to create or overwrite arbitrary files on the affected system and potentially escalate privileges. Cisco became aware of limited active exploitation in June 2026 during internal security testing. The company published patches across multiple release branches (20.9.9.2, 20.12.7.2, 20.15.4.5, 20.15.5.3, 20.18.3.1, and 26.1.1.2) and provided indicators of compromise, including suspicious WAR file uploads and malicious deployment activity visible in log files.
Defense contractors managing SD-WAN infrastructure should prioritize patching affected Catalyst SD-WAN Manager instances, particularly those exposed to external authentication. This marks the eighth actively exploited SD-WAN flaw in 2026, suggesting adversaries are targeting this attack surface systematically. CISA has added CVE-2026-20262 to its Known Exploited Vulnerabilities catalog, with a compliance deadline of June 29, 2026 for Federal Civilian Executive Branch agencies. Organizations subject to CMMC, NIST 800-171, or equivalent network security controls should audit their SD-WAN deployments for suspicious file uploads and deployment activity using the provided indicators. An Omniware engagement can scope vulnerability management and patch prioritization strategies across your infrastructure.
Source: The Hacker News - https://thehackernews.com/2026/06/cisco-releases-security-updates-for.html
Source: TheHackerNews
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