CVE-2018-20684

In WinSCP before 5.14 beta, due to missing validation, the scp implementation would accept arbitrary files sent by the server, potentially overwriting unrelated files. This affects TSCPFileSystem::SCPSink in core/ScpFileSystem.cpp.

• CWE-20

• http://www.securityfocus.com/bid/106526Third Party Advisory, VDB Entry
• https://github.com/winscp/winscp/commit/49d876f2c5fc00bcedaa986a7cf6dedd6bf16f54Patch, Third Party Advisory
• https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txtMitigation, Third Party Advisory
• https://winscp.net/eng/docs/historyRelease Notes, Vendor Advisory
• https://winscp.net/tracker/1675Patch, Vendor Advisory
• https://www.oracle.com/security-alerts/cpujan2020.html
• http://www.securityfocus.com/bid/106526Third Party Advisory, VDB Entry
• https://github.com/winscp/winscp/commit/49d876f2c5fc00bcedaa986a7cf6dedd6bf16f54Patch, Third Party Advisory
• https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txtMitigation, Third Party Advisory
• https://winscp.net/eng/docs/historyRelease Notes, Vendor Advisory
• https://winscp.net/tracker/1675Patch, Vendor Advisory
• https://www.oracle.com/security-alerts/cpujan2020.html

Published

Jan 10, 2019

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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