CVE-2026-4892HIGH 8.4EPSS p18.1%

CVE-2026-4892CVE-2026-4892

Description

A heap-based out-of-bounds write vulnerability in the DHCPv6 implementation of dnsmasq allows local attackers to execute arbitrary code with root privileges via a crafted DHCPv6 packet.

Scoring

CVSS 3.18.4 (HIGH)
VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.27% probability of exploitation · percentile 18.1% · 2026-06-19T12:03:05Z
Published2026-05-11
Last modified2026-05-12

References

  1. https://github.com/NixOS/nixpkgs/pull/519082
  2. https://github.com/NixOS/nixpkgs/pull/519093
  3. https://github.com/pi-hole/FTL/releases/tag/v6.6.2
  4. https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2026q2/018471.html
  5. https://thekelleys.org.uk/dnsmasq/CVE/
  6. https://www.kb.cert.org/vuls/id/471747

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.