A critical zero-day vulnerability in Cisco's SD-WAN solution has been exploited, marking the seventh such incident in 2026. The flaw, identified as CVE-2026-20245, enables attackers to execute arbitrary commands with root privileges, posing a significant threat to affected systems. Currently, no patch is available to remediate this issue. The vulnerability is under active discussion between Cisco and security experts, with its exploitation status determining the necessary course of action - whether to patch immediately or continue monitoring. This ongoing situation underscores the importance of proactive monitoring and swift remediation in mitigating potential attacks. The absence of a patch for CVE-2026-202451 renders affected systems vulnerable to exploitation, making it crucial for practitioners to stay informed about the latest developments and take proactive measures to secure their networks. This vulnerability's active exploitation status makes it a pressing concern for security teams relying on Cisco's SD-WAN solution.
Cisco Warns of 7th SD-WAN Zero-Day Exploited in 2026
⚠️ Critical Alert
Why This Matters
CVE-2026-20245 is in active discussion involving Cisco — exploitation status determines whether this is patch-now or monitor.
References
- SecurityWeek. (2026, June 5). Cisco Warns of 7th SD-WAN Zero-Day Exploited in 2026. *SecurityWeek*. https://www.securityweek.com/cisco-warns-of-7th-sd-wan-zero-day-exploited-in-2026/
Original Source
SecurityWeek
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