CVE-2026-4892 (GCVE-0-2026-4892)

Vulnerability from cvelistv5 – Published: 2026-05-11 16:47 – Updated: 2026-07-02 12:05
VLAI
Title
CVE-2026-4892
Summary
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.
Severity
8.4 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.8 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Show details on NVD website
To clipboard 

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      "cveMetadata": "{\"cveId\": \"CVE-2026-4892\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-07-02T12:05:02.250Z\", \"dateReserved\": \"2026-03-26T13:09:48.958Z\", \"assignerOrgId\": \"37e5125f-f79b-445b-8fad-9564f167944b\", \"datePublished\": \"2026-05-11T16:47:58.846Z\", \"assignerShortName\": \"certcc\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.