CVE-2018-20684 json
In WinSCP before 5.14 beta, due to missing validation, the scp implementation would accept arbitrary files sent by the server, potentially…
published 7y ago modified 4mo ago also EUVD-2018-13231
- cvss
- 7.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.8%
- EPSS 2.8% chance of exploitation in 30 days, percentile 86%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- github.com/winscp/winscp@49d876f commit
- winscp.net/tracker/1675 advisory
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Check with FencerExploit prediction
2.77% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 6.4 | AV:N/AC:L/Au:N/C:N/I:P/A:P |
Classification
- Weakness
-
- CWE-20 Improper Input Validation
References
-
github.com
/winscp/winscp/commit/49d876f2c5fc00bcedaa986a7cf6dedd6bf16f54
patch, third-party-advisory
-
winscp.net
/tracker/1675
patch, vendor-advisory
-
winscp.net
/eng/docs/history
release-notes, vendor-advisory
-
securityfocus.com
/bid/106526
vdb-entry, third-party-advisory
-
sintonen.fi
/advisories/scp-client-multiple-vulnerabilities.txt
mitigation, third-party-advisory
- oracle.com /security-alerts/cpujan2020.html
Sources
- CVE List CVE-2018-20684
- NVD CVE-2018-20684
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