CVE-2026-57916
Medium
Description
proCertum SmartSign opens Certificate Practice Statement (CPS) URI without schema validation. An attacker can prepare arbitrary certificate with CPS URI pointing to a local executable file or any URL, sign a document with it, and send it to the victim. When the victim opens the document in the application, the specified file will be executed (or webpage will be opened). This issue was fixed in version 9.4.3.90.
SeverityMedium
CVSS4.6
Exploit probability—
ProductproCertum SmartSign
PublishedJul 27, 2026
First seenJul 27, 2026
Weakness typeCWE-73CWE-73
How to fix
Update
- Asseco proCertum SmartSign9.4.3.90 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Asseco proCertum SmartSign | v < 9.4.3.90 | 9.4.3.90 |
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