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CVE-2026-4891

🗓️ 11 May 2026 16:47:33Reported by certccType 
cve
 cve
🔗 web.nvd.nist.gov📰️ 2 Media mentions👁 79 Views

Heap-based out-of-bounds read in dnsmasq DNSSEC validation allows remote attackers to cause a denial of service with a crafted DNS packet.

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Detection
Affected
Refs
Social
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-4891
11 May 202616:47
–attackerkb
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Amazon Linux 2023 : dnsmasq, dnsmasq-utils (ALAS2023-2026-1729)
26 May 202600:00
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Amazon Linux 2 : dnsmasq, --advisory ALAS2DNSMASQ-2026-004 (ALASDNSMASQ-2026-004)
27 May 202600:00
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AlmaLinux 8 : dnsmasq (ALSA-2026:20589)
27 May 202600:00
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CentOS Linux 7.9 [CIQ] Security Update: dnsmasq / dnsmasq-debuginfo / dnsmasq-utils Multiple Vulnerabilities (ciqsa-2026_1468)
1 Oct 202600:00
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Rocky Linux 10.2 [CIQ] Security Update: dnsmasq / dnsmasq-debuginfo / dnsmasq-debugsource / dnsmasq-utils / etc Multiple Vulnerabilities (crlsa-2026_19158)
1 Oct 202600:00
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Rocky Linux 8.6 [CIQ] Security Update: dnsmasq / dnsmasq-debuginfo / dnsmasq-debugsource / dnsmasq-utils / etc Multiple Vulnerabilities (ciqsa-2026_1467)
1 Oct 202600:00
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Rocky Linux 8 [CIQ] Security Update: dnsmasq / dnsmasq-debuginfo / dnsmasq-debugsource / dnsmasq-utils / etc Multiple Vulnerabilities (crlsa-2026_20589)
1 Oct 202600:00
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Rocky Linux 9.4 [CIQ] Security Update: dnsmasq / dnsmasq-debuginfo / dnsmasq-debugsource / dnsmasq-utils / etc Multiple Vulnerabilities (ciqsa-2026_1387)
1 Oct 202600:00
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Rocky Linux 9.6 [CIQ] Security Update: dnsmasq / dnsmasq-debuginfo / dnsmasq-debugsource / dnsmasq-utils / etc Multiple Vulnerabilities (ciqsa-2026_1352)
1 Oct 202600:00
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Vulners
Vulnrichment
Node
thekelleysdnsmasqRange<2.92rel2
[
  {
    "vendor": "dnsmasq",
    "product": "dnsmasq",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThan": "2.92rel2",
        "versionType": "custom"
      }
    ]
  }
]

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25 Aug 2026 13:19Current
7.2High risk
Vulners AI Score7.2
CVSS 3.17.5
EPSS0.00836
SSVC
79