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CVE-2026-75029 is an uncontrolled memory-consumption vulnerability in the BIND 9 message parser. When named processes a DNS query response containing multiple identical copies of a singleton record type, such as an SOA record, it appends every identical RDATA instance to the in-memory RDATA set rather than retaining only the permitted singleton occurrence. This permits wire-to-work amplification and increased negative-cache memory consumption. Affected versions are BIND 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, Supported Preview Edition 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.
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A BIND 9 flaw in which specially crafted DNS query responses containing duplicate records can cause named to append identical RDATA repeatedly to its in-memory negative cache, increasing memory consumption and potentially enabling memory-exhaustion attacks.
A medium-severity, remotely exploitable BIND 9 flaw in which named retains duplicate identical singleton DNS RDATA records, enabling wire-to-work amplification and excessive negative-cache memory consumption beyond configured limits.
An unpatched, network-accessible vulnerability affecting Debian Linux versions 12.0, 13.0, and 14.0, with low attack complexity and no required privileges or user interaction. The supplied CVSS v3 vector indicates impact limited to availability.
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Every observed campaign linking this CVE to a named adversary.
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YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
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