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Ubuntu Security NoticesUSN-8873-1

USN-8873-1: Unbound vulnerabilities

Yuqi Qiu and Xiang Li discovered that Unbound did not correctly handle certain memory operations. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-81642) Ben Morris discovered that Unbound did not correctly handle certain memory operations. An attacker could possibly use this issue to cause a denial of service or execute arbitary code. (CVE-2026-82717)

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Scope

What the vendor says is affected

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Timeline

When this advisory changed

  1. Published by Ubuntu

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

  3. Confirmed at the source

    Our collector saw this advisory during a later source check.

Vulnerabilities

CVEs named in this advisory

CVE-2026-81642View CVSS, KEV, EPSS, and threat contextCVE-2026-82717View CVSS, KEV, EPSS, and threat context
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