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Highest advisory severityMedium 1 vendor · 1 advisory

CVE-2026-80225

CVE-2026-80225: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

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Vendor advisory comparison

Red Hat

1 advisory
  • Advisory severityMedium5.3

    Medium [CVE-2026-80225] Denial of Service via continuous queries on TCP/DoT connection

    CVE-2026-80225Source published Source updated

    Denial of Service via continuous queries on TCP/DoT connection. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-1050. Red Hat lists fixing advisory RHSA-2026:68590 with package unbound-main-1.26.1-1.hum1. Affected products named by the advisory: Red Hat Hardened Images; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; and 4 more.

    Related products — impact not confirmed
    • Red Hat Hardened Images
    • Red Hat Enterprise Linux 10
    • Red Hat Enterprise Linux 6
    • Red Hat Enterprise Linux 7

    4 more entries in the full advisory.

    Source-reported affected versions
    • 1.26.0
    Source-reported fixed versions
    • unbound-main-1.26.1-1.hum1
    • RHSA-2026:68590
    Mitigation guidance
    • To mitigate this issue, restrict network access to the Unbound DNS resolver to only trusted clients and networks. This can be achieved by configuring firewall rules to limit inbound connections to the Unbound service ports (e.g., TCP port 53 for DNS over TCP, TCP port 853 for DNS over TLS). For example, using `firewall-cmd --permanent --add-rich-rule='rule family="ipv4" source address="<TRUSTED_NETWORK>" port port="53" protocol="tcp" accept'` and `firewall-cmd --permanent --add-rich-rule='rule family="ipv4" source address="<TRUSTED_NETWORK>" port port="853" protocol="tcp" accept'`. After adding rules, apply them with `firewall-cmd --reload`. Replace `<TRUSTED_NETWORK>` with the IP address or network range of trusted clients. Reloading firewall rules may temporarily interrupt network connections.
    Full advisory and evidenceOpen source bulletin

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