CVE-2023-50784

A buffer overflow in websockets in UnrealIRCd 6.1.0 through 6.1.3 before 6.1.4 allows an...

7.5 High

A buffer overflow in websockets in UnrealIRCd 6.1.0 through 6.1.3 before 6.1.4 allows an unauthenticated remote attacker to crash the server by sending an oversized packet (if a websocket port is open). Remote code execution might be possible on some uncommon, older platforms.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

1.92%Up 1.8 points since Dec 17, 2023

What each source reports

NVD Score used 7.5

Record: CVE-2023-50784
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-120
Updated: 2026-11-02

CVE List No score

Record: CVE-2023-50784
Updated: 2026-11-02

EUVDEUVD-2023-55517 No score

Record: EUVD-2023-55517
Updated: 2026-11-02

GitHub AdvisoriesGHSA-qpj7-hjph-2v33 7.5

A buffer overflow in websockets in UnrealIRCd 6.1.0 through 6.1.3 before 6.1.4 allows an...

Record: GHSA-qpj7-hjph-2v33
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-120
Updated: 2026-11-02

Affected products

unrealircd

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-50784 is a high vulnerability (CVSS 7.5) in Unrealircd, published December 16, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.92%, the 80th percentile. No source names a fixed version.