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Critical 9.8Published Jan 27, 2021
CVE-2021-3331WinSCP before 5.17.10 allows remote attackers to execute arbitrary programs when the URL handler encounters a crafted URL that loads session settings.
Updated under an hour ago ()
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WinSCP before 5.17.10 allows remote attackers to execute arbitrary programs when the URL handler encounters a crafted URL that loads session settings. (For example, this is exploitable in a default installation in which WinSCP is the handler for sftp:// URLs.)
- CVSS
- 9.8 CRITICAL (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- mitre
- NVD analysis
- Modified
- Record last updated
- Oct 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
winscp winscp winscp:winscp | before 5.17.10 | NVD |
References
- https://winscp.net/eng/docs/history#5.17.10x-refsource-misc
- https://winscp.net/tracker/1943x-refsource-misc
- https://github.com/winscp/winscp/commit/faa96e8144e6925a380f94a97aa382c9427f688dx-refsource-misc
- https://winscp.net/eng/docs/rawsettingsx-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.