CVE-2021-47667

CRITICAL EPSS 97.7%

Published Apr 5, 20251y ago · Modified Jun 17, 20261w ago

10.0 CVSS 3.1

Critical

Published Apr 5, 2025 1y ago

Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score

10.0

Exploitability

3.9

Impact

6.0

Vector string

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction None

Scope Changed

Confidentiality High

Integrity High

Availability High

Threat Intelligence

EPSS Exploit Probability

97.7% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-78 OS Command Injection Injection

References 1

projectblack.io https://projectblack.io/blog/zendto-nday-vulnerabilities/

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.