A buffer overflow in websockets in UnrealIRCd 6.1.0 through 6.1.3 before 6.1.4 allows an…
Priority LOW 37CWE-120Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.
Summary
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.
Why it matters now
EPSS 0.01922 80th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:unrealircd:unrealircd:*:*:*:*:*:*:*:* | 6.1.0 to before 6.1.4 | Vulnerable | UnrealIRCd |
- cpe:2.3:a:unrealircd:unrealircd:*:*:*:*:*:*:*:* Versions 6.1.0 to before 6.1.4 Vulnerable ·UnrealIRCd
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2023-50784
- 2026-10-03 Alias added: GHSA-qpj7-hjph-2v33
References
More Unrealircd vulnerabilities
- TI-2010-01989 UnrealIRCd 3.2.8.1, as distributed on certain mirror sites from November 2009 through… CVSS 2.0HIGH 7.5
- TI-2016-06143 The m_authenticate function in modules/m_sasl.c in UnrealIRCd before 3.2.10.7 and 4.x… CVSS 3.0HIGH 8.1
- TI-2009-04649 Buffer overflow in UnrealIRCd 3.2beta11 through 3.2.8, when allow::options::noident is… CVSS 2.0MEDIUM 6.8
- TI-2013-06048 UnrealIRCd 3.2.10 before 3.2.10.2 allows remote attackers to cause a denial of service… CVSS 2.0MEDIUM 5.0
- TI-2013-05367 Use-after-free vulnerability in UnrealIRCd 3.2.10 before 3.2.10.2 allows remote attackers… CVSS 2.0MEDIUM 5.0
- TI-2017-09939 UnrealIRCd 4.0.13 and earlier creates a PID file after dropping privileges to a non-root… CVSS 3.0MEDIUM 5.5
Sources
- CVE-2023-50784 · CVE Program
- CVE-2023-50784 · NVD
- FIRST EPSS
- GHSA-qpj7-hjph-2v33 · GitHub Advisory Database · CC BY 4.0
- CVE-2023-50784 · Red Hat security data · CC BY 4.0
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