CVE-2021-3331
Last modified
CVE-2021-3331 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.). EPSS estimates a 7.41% chance of exploitation in the next 30 days.
Description
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.)
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Winscp | Winscp | < 5.17.10 |
References
- https://github.com/winscp/winscp/commit/faa96e8144e6925a380f94a97aa382c9427f688dPatch, Third Party Advisory
- https://winscp.net/eng/docs/history#5.17.10Release Notes, Vendor Advisory
- https://winscp.net/eng/docs/rawsettingsVendor Advisory
- https://winscp.net/tracker/1943Patch, Vendor Advisory
- https://github.com/winscp/winscp/commit/faa96e8144e6925a380f94a97aa382c9427f688dPatch, Third Party Advisory
- https://winscp.net/eng/docs/history#5.17.10Release Notes, Vendor Advisory
- https://winscp.net/eng/docs/rawsettingsVendor Advisory
- https://winscp.net/tracker/1943Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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