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CVE-2026-46582 is a low-severity cache-poisoning vulnerability in NLnet Labs Unbound versions 1.6.0 through 1.25.1. A replayed DNSSEC-signed wildcard RRset can temporarily be marked secure based on RRSIG validation before wildcard proof validation using NSEC records completes. A race between the resolving thread updating that RRset and a thread serving expired data can cause the prematurely secure wildcard data to be returned and retained as the value of a sibling record. Although subsequent validation identifies the crafted CNAME-wrapped response as bogus, the poisoned sibling RRset may remain cached with secure status and point to the wildcard-derived data.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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.