CVE-2026-86128High· 7.5▾ TwilightA NULL pointer dereference vulnerability in Fireware OS's NetFlow packet-processing feature allows a remote, unauthenticated attacker to cause a denial of service by sending a specially crafted IPv6 packet.
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Sep 30.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.4%
Last analysed / modified upstream
8.2 → 7.5
0.4% → 0.4%
A NULL pointer dereference vulnerability in Fireware OS's NetFlow packet-processing feature allows a remote, unauthenticated attacker to cause a denial of service by sending a specially crafted IPv6 packet.
fireware >= 12.0, < 12.5.21fireware >= 12.12, < 12.12.3fireware >= 2025.0, < 2026.2.3fireware >= 2026.3, < 2026.3.2Upgrade past the affected range:
fireware 2026.3.2Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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