threat-intel
Huawei zero-day attack behind last year’s crash of Luxembourg's entire telecoms network
High
Summary
A zero-day attack targeting a vulnerability in Huawei’s enterprise router software caused a three-hour nationwide telecoms outage in Luxembourg during July 2025. The attack, which exploited a previously undocumented behavior, disrupted mobile, landline, and emergency communications. Despite the significant disruption, investigators found no evidence of a targeted attack and the vulnerability remains unexplained by Huawei.
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