CVE-2021-47667
10.0
CRITICAL · CVSS 3.1 · EPSS 36.6% (pctl 98)
Patch early
EPSS 36.6% — above the 10% action threshold.
Description
An OS command injection vulnerability in lib/NSSDropoff.php in ZendTo 5.24-3 through 6.x before 6.10-7 allows unauthenticated remote attackers to execute arbitrary commands via shell metacharacters in the tmp_name parameter when dropping off a file via a POST /dropoff request.
Scoring
| CVSS | 10.0 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| EPSS | 36.61% — more likely to be exploited than 98% of all CVEs |
| Weakness | CWE-78 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2025-04-05 |
| Last modified | 2026-06-17 |
References
→ the Explorer · watch your stack · NVD