Which versions of FitSoft POS System are affected by CVE-2026-19426?

FitSoft POS System versions are vulnerable to unauthenticated remote access, allowing any attacker with network connectivity to gain complete operational control without credentials (CVSS 8.8).

How to fix or mitigate CVE-2026-19426?

Within 24 hours: Isolate all affected FitSoft POS systems from untrusted networks via firewall rules and network segmentation, restricting connections to authorized administrative terminals only. Within 7 days: Deploy enhanced logging and monitoring of all access attempts to POS systems, establish daily security log reviews for unauthorized activity patterns, and contact FitSoft vendor to request patch timeline and interim guidance. Within 30 days: Coordinate and deploy vendor-released patch to all affected FitSoft POS systems as soon as available; if patch delays exceed 30 days, implement persistent compensating controls including mandatory VPN authentication, IP whitelisting, and continuous security monitoring.

FitSoft POS System CVE-2026-19426

Q: What is the CVSS score of CVE-2026-19426?

CVE-2026-19426 has a CVSS 4.0 base score of 8.8 (High). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 30.0%.

EUVD-2026-57148 HIGH

Missing Authentication for Critical Function (CWE-306)

2026-08-12 twcert

GHSA-fhmv-w5hc-62w9

Authentication Bypass Pos System

8.8

CVSS 4.0 · Vendor: twcert

Severity by source

Vendor (twcert) PRIMARY

8.8 HIGH

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

vuln.today AI

8.2 HIGH

Network-reachable with no credentials required; high integrity impact from unrestricted POS operation access; low confidentiality; no availability impact described.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N

4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (twcert).

CVSS VectorVendor: twcert

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Lifecycle Timeline

Analysis Generated

Aug 12, 2026 - 08:36 vuln.today

CVSS changed

Aug 12, 2026 - 08:22 NVD

8.2 (HIGH) 8.8 (HIGH)

CVE Published

Aug 12, 2026 - 07:07 cve.org

HIGH 8.8

DescriptionCVE.org

POS System developed by FitSoft has a Missing Authentication vulnerability. Unauthenticated remote attackers can directly access and operate the system.

AnalysisAI

Missing authentication in FitSoft's POS System exposes the entire platform to unauthenticated remote attackers who can directly access and fully operate the system over the network without any credential barrier. All versions of the product are affected per the CPE wildcard, and the CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N) confirms zero preconditions are required beyond network reachability. No public exploit has been identified at time of analysis, but the trivial exploitation conditions make this a high-priority remediation target for any deployment with external or semi-trusted network exposure.

Technical ContextAI

FitSoft POS System (cpe:2.3:a:fitsoft:pos_system:*:*:*:*:*:*:*:*) is a point-of-sale platform where the CPE wildcard indicates no version constraint - all shipped versions are implicated. The root cause is CWE-306 (Missing Authentication for Critical Function), a class of vulnerability where software exposes network-facing interfaces that invoke critical operational functions without verifying the identity of the calling actor. In a POS context, such functions typically include transaction processing, inventory management, sales reporting, and system configuration - all high-value targets for fraud or data theft. The CVSS 4.0 supplemental metrics (AT:N, AC:L) confirm there are no attack preconditions or special timing requirements; any actor who can establish a network connection to the system can invoke these functions directly.

RemediationAI

No vendor-released patch with a confirmed specific version has been identified in the available intelligence at time of analysis. Operators should immediately consult the TWCERT English advisory at https://www.twcert.org.tw/en/cp-139-11101-4f85c-2.html for updated patch or upgrade guidance directly from FitSoft. As an immediate compensating control, restrict network access to the POS system using host-based or perimeter firewall rules so that only explicitly trusted internal IP addresses can reach the system's operational interfaces - this eliminates the network-reachable attack surface without requiring a software update, though it does not resolve the underlying CWE-306 deficiency. If remote access is operationally necessary, place the system behind a VPN gateway enforcing strong authentication before any traffic reaches the POS application, effectively compensating for the missing in-application authentication layer. Both network controls are temporary mitigations only and should be maintained until a vendor-supplied patch is applied and verified.