Threats Tagged 'cve-2025-66646'
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Threats Tagged 'cve-2025-66646'
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CVE-2025-66646 is a low-severity vulnerability in RIOT OS versions prior to 2025.10, affecting the IPv6 fragmentation reassembly module. The flaw is a NULL pointer dereference triggered when a fragmented IPv6 packet with fragment offset 0 and an empty payload is received, causing the OS to crash and resulting in a denial of service (DoS). Exploitation requires the gnrc_ipv6_ext_frag module to be enabled and the attacker to send crafted IPv6 packets to the device. No authentication or user interaction is needed, but the impact is limited to DoS without data compromise. The vulnerability has a CVSS 4.0 score of 1.7, indicating low severity. European organizations using RIOT OS in IoT or embedded devices should update to version 2025.10 to mitigate this issue. Join the discussion | CVE Database V5 | 12/17/2025, 19:18:08 UTC Added: 12/17/2025, 19:35:38 UTC |
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