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    CVE-2026-42534: Unbound jostle logic bug causing slow DNS in Windows networks

    CVE-2026-42534 is a medium-severity vulnerability disclosed on May 20, 2026, in NLnet Labs Unbound versions up to and including 1.25.0, where repeated duplicate DNS queries can bypass the resolver’s jostle logic and degrade resolution performance for clients relying on it as recursive DNS...
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    • cve-2026-42534 dns performance unbound dns windows dns security
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    • Forum: Security Alerts
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