An information disclosure vulnerability in dnsmasq allows remote attackers to bypass source checks via a crafted DNS packet with RFC 7871 client subnet information.
History

Tue, 12 May 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-200

Mon, 11 May 2026 21:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-200

Mon, 11 May 2026 20:45:00 +0000

Type Values Removed Values Added
References

Mon, 11 May 2026 19:30:00 +0000

Type Values Removed Values Added
References

Mon, 11 May 2026 19:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 11 May 2026 19:00:00 +0000

Type Values Removed Values Added
First Time appeared Dnsmasq
Dnsmasq dnsmasq
Weaknesses CWE-200
Vendors & Products Dnsmasq
Dnsmasq dnsmasq

Mon, 11 May 2026 18:45:00 +0000


Mon, 11 May 2026 17:30:00 +0000

Type Values Removed Values Added
Description An information disclosure vulnerability in dnsmasq allows remote attackers to bypass source checks via a crafted DNS packet with RFC 7871 client subnet information.
Title CVE-2026-4893
References

cve-icon MITRE

Status: PUBLISHED

Assigner: certcc

Published:

Updated: 2026-05-11T19:57:48.774Z

Reserved: 2026-03-26T13:12:03.722Z

Link: CVE-2026-4893

cve-icon Vulnrichment

Updated: 2026-05-11T18:28:48.460Z

cve-icon NVD

Status : Received

Published: 2026-05-11T18:16:41.593

Modified: 2026-05-11T21:19:02.917

Link: CVE-2026-4893

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-12T00:00:04Z