CVE-2026-57916
Arbitrary Path Execution via CPS URI in proCertum SmartSign
- State
- Published
- Severity
- 4.6 Medium
- Published
- Jul 27, 2026
- Updated
- Jul 27, 2026
- Reserved
- Jun 26, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 4.6 Medium | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N | CERT-PL |
Weaknesses
- CWE-73 External Control of File Name or Path
Affected Products
| Product | Versions |
|---|---|
proCertum SmartSignAsseco |
|
References
- https://cert.pl/posts/2026/07/CVE-2026-57916third-party-advisory
- https://pomoc.certum.pl/pl/oprogramowanie/procertum-smartsign/product
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