DNSSEC Archives • Daily CyberSecurity

Unbound DNS Vulnerabilities Expose Resolvers to RCE

Diagram illustrating critical Unbound DNS vulnerabilities and DNSSEC heap corruption

Unbound DNS Vulnerabilities Expose Resolvers to RCE

Do Son September 17, 2026

NLnet Labs patched critical Unbound DNS vulnerabilities. Upgrade now to fix Unbound DNS vulnerabilities and block remote code execution attacks.

ISC Patches 9 BIND 9 Vulnerabilities, Including a DNSSEC Cache Poisoning Flaw BIND vulnerability advisory chart listing nine DNSSEC flaws including CVE-2026-13321 cache poisoning fixed in BIND 9.20.26 and 9.21.24

BIND vulnerability advisory chart listing nine DNSSEC flaws including CVE-2026-13321 cache poisoning fixed in BIND 9.20.26 and 9.21.24

ISC Patches 9 BIND 9 Vulnerabilities, Including a DNSSEC Cache Poisoning Flaw

Do Son July 23, 2026

ISC fixed 9 BIND vulnerabilities in 9.20.26 and 9.21.24. The top BIND vulnerability, CVE-2026-13321, enables DNSSEC cache poisoning. Patch now.

NLnet Labs Issues Urgent Security Release for Unbound Resolver Unbound DNSSEC validation vulnerability

NLnet Labs Issues Urgent Security Release for Unbound Resolver

Do Son May 25, 2026

NLnet Labs patches a critical Unbound DNSSEC validation vulnerability allowing unauthenticated remote code execution. Update to 1.25.1.

Multiple Memory Flaws in Dnsmasq Threaten Millions of Connected Devices dnsmasq Vulnerabilities DNS Cache Poisoning

Multiple Memory Flaws in Dnsmasq Threaten Millions of Connected Devices

Do Son May 13, 2026

Urgent: dnsmasq patches 6 critical flaws (CVE-2026-2291+) enabling DNS poisoning and root access. Update your router firmware to version 2.92rel2 now!

The Day Germany Disappeared: How a Single Cryptographic Error Paralyzed the .de Namespace .de domain outage DNSSEC

The Day Germany Disappeared: How a Single Cryptographic Error Paralyzed the .de Namespace

Do Son May 6, 2026

A massive configuration error at DENIC paralyzed millions of .de domains. Discover how a routine DNSSEC key rotation caused a nationwide internet blackout.

BIND 9 Security Alert: ISC Releases Patches for Trio of Vulnerabilities CVE-2023-3341 BIND 9 Security DNS ACL Bypass

BIND 9 Security Alert: ISC Releases Patches for Trio of Vulnerabilities

Do Son March 26, 2026

BIND 9 patches 3 flaws including a sneaky ACL bypass (CVE-2026-3591) and a High-severity CPU exhaustion bug. Secure your DNS infrastructure now.

Microsoft Boosts Email Security with General Availability of Inbound SMTP DANE with DNSSEC Gmail Scam

Microsoft Boosts Email Security with General Availability of Inbound SMTP DANE with DNSSEC

Do Son October 30, 2024

Enhance email security with Inbound SMTP DANE and DNSSEC. Learn how Microsoft's Exchange Online protects against sophisticated cyberattacks.

“KeyTrap” (CVE-2023-50387) Flaw Leaves DNS Systems Vulnerable, PoC Published CVE-2023-50387 PoC KeyTrap

“KeyTrap” (CVE-2023-50387) Flaw Leaves DNS Systems Vulnerable, PoC Published

Do Son February 19, 2024

A PoC was disclosed for a severe design flaw (CVE-2023-50387, KeyTrap) in Domain Name System Security Extensions (DNSSEC)