importantSYS.SOURCE: The Hacker News• 2026-09-17T18:00:00+05:30

Critical Heap Overflow in Unbound DNSSEC Validator Enables Remote Code Execution

#dnssec #rce #vulnerability

A critical heap overflow vulnerability (CVE-2026-81642) in the Unbound DNSSEC validator could enable remote code execution (RCE) via a malicious DNS zone, according to NLnet Labs. The flaw was addressed in Unbound 1.26.1, with no reported exploitation as of the advisory release.

Every release of the Unbound DNS resolver before 1.26.1 has a critical heap overflow in its DNSSEC validator, maintainer NLnet Labs said in an advisory on Wednesday.

An attacker who controls a malicious zone and queries a vulnerable resolver can trigger it, enabling remote code execution.

Unbound 1.26.1, released the same day, fixes the bug, tracked as CVE-2026-81642, along with

Read original article

*** END OF TRANSMISSION ***

> TECHCRUNCH DISRUPT 2026 VOLUNTEER APPLICATION DEADLINE APPROACHING > EVALUATION OF TOVALA'S SMART OVEN: CONVENIENCE VS. CULINARY QUALITY OVER TWO WEEKS > HUAWEI ACCELERATES AI CHIP LAUNCH TO Q1 2027 TO COMPETE WITH NVIDIA > TECHCRUNCH DISRUPT 2026 EXHIBIT DEADLINE APPROACHING: STARTUPS URGED TO SECURE BOOTH SPACE > MARTIN FOWLER'S CRITIQUE OF LARGE LANGUAGE MODELS > AI AGENTS INSTINCT AND META'S MUSE INTRODUCE CALL-MAKING FEATURES > GOOGLE, NVIDIA, AND ANTHROPIC PARTNER WITH EMERALD AI TO EXPAND DATA CENTER CAPACITY VIA GRID MANAGEMENT > LUCID MOTORS EXPLORES ROBOTAXI COLLABORATION WITH BOLT IN EUROPE > FINE-TUNING GLINER WITH GEMINI LABELS FOR COST-EFFECTIVE NER ON REDDIT COMMENTS > AI SETUP SHARING PLATFORM: COMMUNITY-DRIVEN INSIGHTS AND TECHNICAL WORKFLOWS> TECHCRUNCH DISRUPT 2026 VOLUNTEER APPLICATION DEADLINE APPROACHING > EVALUATION OF TOVALA'S SMART OVEN: CONVENIENCE VS. CULINARY QUALITY OVER TWO WEEKS > HUAWEI ACCELERATES AI CHIP LAUNCH TO Q1 2027 TO COMPETE WITH NVIDIA > TECHCRUNCH DISRUPT 2026 EXHIBIT DEADLINE APPROACHING: STARTUPS URGED TO SECURE BOOTH SPACE > MARTIN FOWLER'S CRITIQUE OF LARGE LANGUAGE MODELS > AI AGENTS INSTINCT AND META'S MUSE INTRODUCE CALL-MAKING FEATURES > GOOGLE, NVIDIA, AND ANTHROPIC PARTNER WITH EMERALD AI TO EXPAND DATA CENTER CAPACITY VIA GRID MANAGEMENT > LUCID MOTORS EXPLORES ROBOTAXI COLLABORATION WITH BOLT IN EUROPE > FINE-TUNING GLINER WITH GEMINI LABELS FOR COST-EFFECTIVE NER ON REDDIT COMMENTS > AI SETUP SHARING PLATFORM: COMMUNITY-DRIVEN INSIGHTS AND TECHNICAL WORKFLOWS