What’s Vulnerable › Vulnerabilities

CVE-2018-20684

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-01-10 · updated 2026-06-17
• Weakness: CWE-20

Description

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.

Affected products

• Winscp: through 5.13.7

References

• http://www.securityfocus.com/bid/106526
• https://github.com/winscp/winscp/commit/49d876f2c5fc00bcedaa986a7cf6dedd6bf16f54
• https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt
• https://winscp.net/eng/docs/history
• https://winscp.net/tracker/1675
• https://www.oracle.com/security-alerts/cpujan2020.html
• http://www.securityfocus.com/bid/106526
• https://github.com/winscp/winscp/commit/49d876f2c5fc00bcedaa986a7cf6dedd6bf16f54
• https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt
• https://winscp.net/eng/docs/history
• https://winscp.net/tracker/1675
• https://www.oracle.com/security-alerts/cpujan2020.html

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