CVE-2026-22852
Last modified
CVE-2026-22852 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a malicious RDP server can trigger a heap-buffer-overflow write in the FreeRDP client when processing Audio Input (AUDIN) format lists. EPSS estimates a 0.36% chance of exploitation in the next 30 days.
Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a malicious RDP server can trigger a heap-buffer-overflow write in the FreeRDP client when processing Audio Input (AUDIN) format lists. audin_process_formats reuses callback->formats_count across multiple MSG_SNDIN_FORMATS PDUs and writes past the newly allocated formats array, causing memory corruption and a crash. This vulnerability is fixed in 3.20.1.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Freerdp | Freerdp | < 3.20.1 |
References
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9chc-g79v-4qq4Exploit, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-22852?
How severe is CVE-2026-22852?
How do I fix CVE-2026-22852?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-2284The News Element Elementor Blog Magazine plugin for WordPres…5.4
- CVE-2026-22844A Command Injection vulnerability in Zoom Node Multimedia Ro…9.9
- CVE-2026-22849Saleor is an e-commerce platform. Starting in version 3.0.0 …4.8
- CVE-2026-2285CrewAI contains a arbitrary local file read vulnerability in…7.5
- CVE-2026-22850Koko Analytics is an open-source analytics plugin for WordPr…8.3
- CVE-2026-22851FreeRDP is a free implementation of the Remote Desktop Proto…5.9
- CVE-2026-22853FreeRDP is a free implementation of the Remote Desktop Proto…9.8
- CVE-2026-22854FreeRDP is a free implementation of the Remote Desktop Proto…9.8
- CVE-2026-22855FreeRDP is a free implementation of the Remote Desktop Proto…9.1
- CVE-2026-22856FreeRDP is a free implementation of the Remote Desktop Proto…8.1
- CVE-2026-22857FreeRDP is a free implementation of the Remote Desktop Proto…9.8
- CVE-2026-22858FreeRDP is a free implementation of the Remote Desktop Proto…9.1
Are you affected by CVE-2026-22852?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST