What’s Vulnerable › Vulnerabilities

CVE-2018-8784

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 7.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-11-29 · updated 2026-06-17
• Weakness: CWE-120

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.

Affected products

• Canonical Ubuntu Linux: 18.04, 18.10
• FreeRDP: through 1.2.0; 2.0.0-rc1, 2.0.0-rc2, 2.0.0-rc3

References

• http://www.securityfocus.com/bid/106938
• https://github.com/FreeRDP/FreeRDP/commit/17c363a5162fd4dc77b1df54e48d7bd9bf6b3be7
• https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/
• https://usn.ubuntu.com/3845-1/
• http://www.securityfocus.com/bid/106938
• https://github.com/FreeRDP/FreeRDP/commit/17c363a5162fd4dc77b1df54e48d7bd9bf6b3be7
• https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/
• https://usn.ubuntu.com/3845-1/

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