CVE-2026-64193
A critical flaw in Net::DNS for Perl lets attackers run arbitrary commands on a system that processes DNS queries with a specially crafted EDNS EXTENDED-ERROR option. The library evaluates untrusted data using Perl's eval, which can execute shell commands. This could allow a remote attacker to take full control of the affected machine.
No official fix yet. If none appears within 45 days of first tracking, this entry is removed automatically.
Who is affected
Net::DNS for Perl, versions 1.55 and earlier.
Real-world impact
An attacker could execute any command on the server, potentially gaining full administrative control and compromising all data and services.
Why this severity
The CVSS score of 9.8 reflects that the flaw is network‑exploitable with no authentication required, and it provides complete compromise of confidentiality, integrity, and availability.
What to do about it
No official fix or mitigation is documented in the sources yet. Monitor the vendor advisory and apply the patch as soon as it is released.
No fix documented in sources