Threats Tagged 'cve-2026-21910'
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Threats Tagged 'cve-2026-21910'
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0 CVE-2026-21910 is a medium-severity vulnerability in Juniper Networks Junos OS affecting EX4k and QFX5k Series platforms that support EVPN-VXLAN VPLAG configurations. An unauthenticated network-adjacent attacker can cause a denial of service by flapping an interface, which leads to traffic drops between VXLAN Network Identifiers (VNIs). The issue arises when multiple load-balanced next-hop routes exist for the same destination and a link flap occurs in an EVPN-VXLAN LAG. Recovery requires manual restart of the affected FPC slot. The vulnerability affects multiple Junos OS versions prior to specific patched releases. No known exploits are currently reported in the wild. Defenders should prioritize patching affected devices and consider network design adjustments to mitigate impact. Join the discussion | CVE Database V5 | 01/15/2026, 20:23:29 UTC Added: 01/15/2026, 20:30:47 UTC |
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