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CVE-2026-3039 is a pre-authentication memory-exhaustion vulnerability in BIND 9 servers configured for TKEY-based GSS-API authentication. During GSS-API TKEY negotiation, BIND invokes the GSS-API context-acceptance routine. When negotiation returns the continuation status, BIND returns without either retaining the resulting GSS security context for the next exchange or releasing it. Each qualifying request therefore leaks a GSS-library security context. The allocations occur through the GSS/Kerberos library allocator, outside BIND's internal memory-accounting mechanism, preventing BIND memory limits and statistics from accurately accounting for the leaked memory. Affected versions are BIND 9.0.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, and corresponding affected Supported Preview Edition releases.
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No public exploit code observed for this vulnerability.
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35 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability addressed by Huawei EulerOS SA-2026-3249 affecting EulerOS 2.0 BIND-related packages. The content does not specify the flaw type or impact for this individual CVE.
A vulnerability addressed by Huawei EulerOS SA-2026-3324 affecting listed EulerOS 2.0 BIND packages; the content provides no technical flaw description.
A BIND denial-of-service vulnerability causing excessive memory consumption in servers using TKEY-based GSS-API authentication, particularly Active Directory-integrated or Kerberos-secured DNS deployments.
A BIND 9 server memory-exhaustion vulnerability during GSS-API TKEY negotiation.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.