Asseco proCertum SmartSign prior 9.4.3.90 xml external entity reference

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k5.99

Summaryinfo

A vulnerability has been found in Asseco proCertum SmartSign and classified as problematic. This affects an unknown part. This manipulation causes xml external entity reference. This vulnerability is tracked as CVE-2026-57917. The attack is restricted to local execution. No exploit exists.

Detailsinfo

A vulnerability was found in Asseco proCertum SmartSign. It has been declared as problematic. Affected by this vulnerability is an unknown part. The manipulation with an unknown input leads to a xml external entity reference vulnerability. The CWE definition for the vulnerability is CWE-611. The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

proCertum SmartSign parses external XML entities from arbitrary crafted signature files, enabling SSRF and potentially allowing the reading of local files, depending on the parser's configuration. The XML External Entity (XXE) vulnerability is triggered simply by previewing a file in the file selection window, before the victim clicks “Open”. This issue was fixed in version 9.4.3.90.

It is possible to read the advisory at cert.pl. This vulnerability is known as CVE-2026-57917 since 06/26/2026. The exploitation appears to be easy. Attacking locally is a requirement. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 9.4.3.90 eliminates this vulnerability.

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Productinfo

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.6

VulDB Base Score: 4.8
VulDB Temp Score: 4.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Xml external entity reference
CWE: CWE-611 / CWE-610
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: proCertum SmartSign 9.4.3.90

Timelineinfo

06/26/2026 CVE reserved
07/27/2026 +31 days Advisory disclosed
07/27/2026 +0 days VulDB entry created
07/27/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: cert.pl
Status: Confirmed

CVE: CVE-2026-57917 (🔒)
GCVE (CVE): GCVE-0-2026-57917
GCVE (VulDB): GCVE-100-383407

Entryinfo

Created: 07/27/2026 14:01
Changes: 07/27/2026 14:01 (17), 07/27/2026 14:02 (35)
Complete: 🔍
Cache ID: 216::103

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