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#2 BleepingComputer general February 25, 2026 at 18:01 UTC

Critical Cisco SD-WAN bug exploited in zero-day attacks since 2023

By Lawrence Abrams

AI Summary

Cisco warns that CVE-2026-20127, a critical authentication bypass vulnerability in Catalyst SD-WAN, has been actively exploited in zero-day attacks since 2023, allowing remote attackers to compromise controllers and add malicious rogue peers. The vulnerability affects multiple Cisco edge technology products and represents part of a broader campaign targeting network infrastructure.

Relevance score: 94.0/100

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