CVE-2021-3331
9.8
CRITICAL · CVSS 3.1 · EPSS 7.6% (pctl 94)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
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.)
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 7.61% — more likely to be exploited than 94% of all CVEs |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2021-01-27 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| winscp | winscp |
References
- https://github.com/winscp/winscp/commit/faa96e8144e6925a380f94a97aa382c9427f688d
- https://winscp.net/eng/docs/history#5.17.10
- https://winscp.net/eng/docs/rawsettings
- https://winscp.net/tracker/1943
- https://github.com/winscp/winscp/commit/faa96e8144e6925a380f94a97aa382c9427f688d
- https://winscp.net/eng/docs/history#5.17.10
- https://winscp.net/eng/docs/rawsettings
- https://winscp.net/tracker/1943
→ the Explorer · watch your stack · NVD