Medium 4.6Published Jul 27, 2026

CVE-2026-57916Arbitrary Path Execution via CPS URI in proCertum SmartSign

Updated under an hour ago (Oct 27, 2026, 7:10 PM ET)

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It affects Asseco proCertum SmartSign. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Asseco proCertum SmartSign

Exploited in the last 30 days

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.

CVSS: 4.6 MEDIUM (v4.0, CNA)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
Weakness (CWE): CWE-73
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: CERT-PL
NVD analysis: Deferred
Record last updated: Jul 27, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Asseco proCertum SmartSign asseco:procertum_smartsign (from the name)	before 9.4.3.90	CNA record

References

References

https://cert.pl/posts/2026/07/CVE-2026-57916	third-party-advisory
https://pomoc.certum.pl/pl/oprogramowanie/procertum-smartsign/	product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.