CVE-2026-42959
CVE-2026-42959: 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.
Vendor advisory comparison
Red Hat
1 advisory- Advisory severityHigh7.5
High [CVE-2026-42959] Unbound DNSSEC Validator Denial of Service via Incorrect Write Offset Counter in Chase-Reply Messages
CVE-2026-42959Source published
Unbound DNSSEC Validator Denial of Service via Incorrect Write Offset Counter in Chase-Reply Messages. Red Hat rates this important (CVSS 7.5). Weakness: CWE-824. Affected package(s): unbound-main, unbound. Resolved in Red Hat advisory RHSA-2026:23231 — update the affected packages (`sudo dnf update`).
- Affected products in this advisory
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat Hardened Images
2 more entries in the full advisory.
- Source-reported affected versions
- unbound-main-1.25.1-0.1.hum1
- unbound-0:1.16.2-5.11.el8_10
- unbound-0:1.24.2-7.el10_2.1
- unbound-0:1.24.2-3.el9_8.1
- Source-reported fixed versions
- RHSA-2026:23231
- Mitigation guidance
- Update the affected package(s) to the fixed version shipped in RHSA-2026:23231 (`sudo dnf update` / `yum update`).
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