CRITICALpublic-safe

CVE-2026-81642

NVD: In NLnet Labs Unbound up to and including 1.26.0, a vulnerability was found in the DNSSEC validator that enables denial of service and possible remote code execution as a result of digesting DNSKEYs. NVD: A DNSKEY with an owner compression pointer to its own RDATA can overflow the digest buffer. NVD: Remote code execution is possible through attacker controlled data.

CVSS
9.1 Severity
CRITICAL EPSS
0.0052 (43) KEV
-

Source-published summary

Possible impact

Source describes code execution review · service availability risk. Possible impact: An attacker may be able to run code or commands on affected systems.

Affected context

vendor/product: nlnetlabs / unbound

Remediation / advisory

Remediation reference present; patch status requires confirmation in the linked advisory.

Why it matters

Source describes code execution review · service availability risk. Possible impact: An attacker may be able to run code or commands on affected systems.; CVSS 9.1 (CRITICAL); EPSS percentile 43; not listed in KEV; Remediation reference present; patch status requires confirmation in the linked advisory; sources: NVD, Vendor Advisory.

What to verify

Confirm affected product/version, vendor advisory, patch or mitigation, and exposure.

Exposure hint

exposure unknown

Impact tags

code execution reviewservice availability review

Urgency reasons

CVSS CRITICALaffected product presentvendor advisory presentrecent updateremediation reference present

Source-derived note

Summary derived from NVD / Vendor Advisory description; unsafe procedural detail is not shown.

Redaction metadata

source summary used: True
fallback summary used: False
unsafe procedural detail present: false
raw source displayed: false
public summary redacted: true

Remediation handoff

Public-safe static handoff for human/Codex remediation planning. Scan, patch, external execution, and auto remediation are disabled.

Handoff JSON Handoff Markdown Safe Codex prompt

Safety note

This radar shows source-published defensive context only. Exploit procedures, exploit strings, scanner commands, and auto-remediation are not provided.