CVE•Published 2026-07-30•Modified 2026-07-30•0 articles on news•4 live references•NVD data
CVE-2026-58218
Vulnerability data via NVD (ingested)
CVSS v3.1
5.3
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
EPSS percentile
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Weaknesses (CWE)
Description
A flaw was found in Samba's internal DNS server where unauthenticated TKEY registration requests were added to the TKEY name cache before being rejected. A remote, unauthenticated attacker can exploit this behavior by sending a large number of TKEY requests with arbitrary names, exhausting the cache and evicting legitimate TKEY entries. This can prevent legitimate TSIG authentication for signed DNS queries, resulting in a denial of service.
Timeline
Published 2026-07-30
Modified 2026-07-30
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common). Live host counts are a Premium feature.
More intel sources (5)
Shodan report
vuln:CVE-2026-58218Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-58218Censys host search filtered to this CVE id.
grep.app
CVE-2026-58218Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-58218GitHub code search for direct mentions.
Google dork
"CVE-2026-58218" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-58218 on GitHub.
We haven't classified any articles referencing CVE-2026-58218 yet. The external references above still apply.