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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.77%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 2.77% probability · 86th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- winscp/winscp
- Source
- cve@mitre.org
EPSS 2.8% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.