CVE-2018-20684

HIGHNVD 7.57.5—

7.5

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 v3: 7.5
EG Score: 7.5(medium)
EPSS: 69.0%
KEV: Not listed

Published

January 10, 2019

Last Modified

November 21, 2024

References (12)

cve@mitrehttp://www.securityfocus.com/bid/106526
cve@mitrehttps://github.com/winscp/winscp/commit/49d876f2c5fc00bcedaa986a7cf6dedd6bf16f54
cve@mitrehttps://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt
cve@mitrehttps://winscp.net/eng/docs/history
cve@mitrehttps://winscp.net/tracker/1675
cve@mitrehttps://www.oracle.com/security-alerts/cpujan2020.html
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/106526
af854a3a-2127-422b-91ae-364da2661108https://github.com/winscp/winscp/commit/49d876f2c5fc00bcedaa986a7cf6dedd6bf16f54
af854a3a-2127-422b-91ae-364da2661108https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt
af854a3a-2127-422b-91ae-364da2661108https://winscp.net/eng/docs/history
af854a3a-2127-422b-91ae-364da2661108https://winscp.net/tracker/1675
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpujan2020.html

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-20Improper Input Validation

Data Freshness Timeline

(refreshed 13× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:14 UTCEPSS rescore
2026-06-08 14:14 UTCEPSS rescore
2026-06-07 15:22 UTCEPSS rescore
2026-06-07 15:22 UTCEPSS rescore
2026-06-06 13:45 UTCEPSS rescore
2026-06-06 13:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 00:14 UTCEPSS rescore
2026-05-31 00:14 UTCEPSS rescore
2026-05-29 13:41 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-27 23:28 UTCEG score recompute

Frequently asked(5)

What is CVE-2018-20684?

CVE-2018-20684 is a high vulnerability published on January 10, 2019. 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.

When was CVE-2018-20684 disclosed?

CVE-2018-20684 was first published in the National Vulnerability Database on January 10, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2018-20684 actively exploited?

CVE-2018-20684 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 69.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-20684?

CVE-2018-20684 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2018-20684?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-20684, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2018-20684

📅 Published

🔄 Last Modified

🔗 References (12)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-20684?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (12)

Frequently asked(5)

Related CVEs(same CWE)