Max severity SonicWall SMA1000 flaw now exploited in attacks
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Attackers are now actively exploiting a maximum-severity vulnerability in SonicWall SMA1000 appliances, tracked as CVE-2026-102255. The flaw was patched only three days ago, on Tuesday, and exploitation attempts have already been observed in the wild — a reminder of how quickly threat actors move once a critical fix becomes public.
Organizations running affected SMA1000 appliances should treat this as urgent. If you haven't applied the vendor's patch yet, prioritize it immediately and review your exposure to the internet.
Key points:
- Vulnerability: CVE-2026-102255 in SonicWall SMA1000
- Severity: maximum
- Status: patched on Tuesday, now exploited in attacks
- Action: apply the available fix as soon as possible
Given the active exploitation, administrators should also check for signs of compromise on any SMA1000 instances that were unpatched, and consider restricting management access until remediation is confirmed.
Source: BleepingComputer
Has your organization already patched its SonicWall SMA1000 appliances, or are you still working through the rollout?
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