CVE-2018-8784
CRITICALCVSS 9.8/10EPSS 7.29%
Last modified
CVE-2018-8784 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. FreeRDP prior to version 2.0.0-rc4 contains a Heap-Based Buffer Overflow in function zgfx_decompress_segment() that results in a memory corruption and probably even a remote code execution.. EPSS estimates a 7.29% chance of exploitation in the next 30 days.
Description
FreeRDP prior to version 2.0.0-rc4 contains a Heap-Based Buffer Overflow in function zgfx_decompress_segment() that results in a memory corruption and probably even a remote code execution.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Freerdp | Freerdp | <= 1.2.0 | — |
| Freerdp | Freerdp | 2.0.0 | Rc1 |
| Canonical | Ubuntu Linux | 18.04 | — |
| Canonical | Ubuntu Linux | 18.10 | — |
References
- http://www.securityfocus.com/bid/106938Third Party Advisory, VDB Entry
- https://github.com/FreeRDP/FreeRDP/commit/17c363a5162fd4dc77b1df54e48d7bd9bf6b3be7Patch, Vendor Advisory
- https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/Exploit, Third Party Advisory
- https://usn.ubuntu.com/3845-1/Third Party Advisory
- http://www.securityfocus.com/bid/106938Third Party Advisory, VDB Entry
- https://github.com/FreeRDP/FreeRDP/commit/17c363a5162fd4dc77b1df54e48d7bd9bf6b3be7Patch, Vendor Advisory
- https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/Exploit, Third Party Advisory
- https://usn.ubuntu.com/3845-1/Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2018-8784?
FreeRDP prior to version 2.0.0-rc4 contains a Heap-Based Buffer Overflow in function zgfx_decompress_segment() that results in a memory corruption and probably even a remote code execution.
How severe is CVE-2018-8784?
CVE-2018-8784 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 7.29% probability of exploitation in the next 30 days.
How do I fix CVE-2018-8784?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
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.
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