# Attackers Exploit UnrealIRCd Flaw That Enables Server-Level Command Injection

Source: [The Hacker News](https://thehackernews.com/2026/11/attackers-exploit-unrealircd-flaw-that.html) · 2026-11-14 · Security
Page: https://themorning.dev/story/attackers-exploit-unrealircd-flaw-that-enables-server-level-command-injection-b58e8e6c37edfa61
Kind: security · Impact: high

## In brief

- CISA added a high-severity UnrealIRCd flaw to its Known Exploited Vulnerabilities catalog on Friday.
- The flaw affects UnrealIRCd, an open-source IRC server.
- Reports of active exploitation prompted the KEV addition, and the flaw enables server-level command injection.

## Why it matters

If you run UnrealIRCd, attackers are actively exploiting a flaw that allows command injection at the server level, so an unpatched server may be compromised.

## What to do

- Check whether any of your servers run UnrealIRCd and identify their versions.
- Review the CISA KEV entry and the vendor guidance for remediation steps.

## Coverage

- [Attackers Exploit UnrealIRCd Flaw That Enables Server-Level Command Injection](https://thehackernews.com/2026/11/attackers-exploit-unrealircd-flaw-that.html) — The Hacker News, 2026-11-14

Tags: security, unrealircd, irc, command-injection, cisa, vulnerability

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Brief generated by AI (claude-haiku-5-5) from the reporting listed under Coverage. Headlines belong to their publishers. The Morning Dev – https://themorning.dev