Sipay Electronic Money and Payment Services Virtual POS up to 26.9.0 signature verification

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.4$0-$5k1.49

Summaryinfo

A vulnerability, which was classified as critical, was found in Sipay Electronic Money and Payment Services Virtual POS up to 26.9.0. The affected element is an unknown function of the component Virtual POS Module. The manipulation results in signature verification. This vulnerability is reported as CVE-2026-85531. The attack can be launched remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Sipay Electronic Money and Payment Services Virtual POS up to 26.9.0. Affected is some unknown functionality of the component Virtual POS Module. The manipulation with an unknown input leads to a signature verification vulnerability. CWE is classifying the issue as CWE-347. The product does not verify, or incorrectly verifies, the cryptographic signature for data. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Improper verification of cryptographic signature vulnerability in Sipay Electronic Money and Payment Services Inc. OpenCart Virtual POS Module allows Signature Spoofing by Improper Validation. This issue affects OpenCart Virtual POS Module: from 26.8.2 before 26.9.1.

The advisory is shared for download at siberguvenlik.gov.tr. This vulnerability is traded as CVE-2026-85531 since 09/04/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

Upgrading to version 26.9.1 eliminates this vulnerability.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 9.8
CNA Vector (TR-CERT): 🔒

CVSSv2info

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

Exploitinginfo

Class: Signature verification
CWE: CWE-347 / CWE-345
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

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: Virtual POS 26.9.1

Timelineinfo

09/04/2026 CVE reserved
10/09/2026 +35 days Advisory disclosed
10/09/2026 +0 days VulDB entry created
10/09/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: siberguvenlik.gov.tr
Status: Confirmed

CVE: CVE-2026-85531 (🔒)
GCVE (CVE): GCVE-0-2026-85531
GCVE (VulDB): GCVE-100-415872

Entryinfo

Created: 10/09/2026 14:59
Changes: 10/09/2026 14:59 (63)
Complete: 🔍
Cache ID: 216::103

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