Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Network-accessible with low-privilege account required; missing authorization yields full confidentiality loss with no integrity or availability impact, matching S:U scope.
Primary rating from Vendor (TR-CERT).
CVSS VectorVendor: TR-CERT
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Lifecycle Timeline
1DescriptionCVE.org
Missing Authorization vulnerability in Universal Software Inc. FlexCity allows Exploiting Incorrectly Configured Access Control Security Levels.
This issue affects FlexCity: from 5.536.0 through 11052026.
AnalysisAI
Missing authorization in Universal Software Inc. FlexCity (versions 5.536.0 through 11052026) exposes sensitive data to low-privileged authenticated users who can bypass access control security levels. The vulnerability (CWE-862) allows network-accessible exploitation with low attack complexity, resulting in high confidentiality impact with no integrity or availability loss. No public exploit code and no CISA KEV listing have been identified at time of analysis, but the low-privilege network vector makes this a realistic internal threat in any environment running affected versions.
Technical ContextAI
CWE-862 (Missing Authorization) occurs when software performs an operation or grants access to a resource without verifying that the requesting user has been authorized to do so - distinct from authentication failures, this is a failure to enforce access control decisions after identity has been established. FlexCity, developed by Universal Software Inc. (CPE: cpe:2.3:a:universal_software_inc.:flexcity:*:*:*:*:*:*:*:*), appears to expose one or more internal endpoints or functional access control tiers without adequate server-side authorization checks, allowing users operating at a lower privilege tier to invoke functionality or retrieve data reserved for higher security levels. The 'Authentication Bypass' tag suggests the missing check allows a low-privilege session to traverse an incorrectly configured access control boundary. The unusually formatted upper-bound version string '11052026' in the affected range may represent a date-based release identifier (likely 11 May 2026 or November 5 2026), indicating this is a recent disclosure against a currently active release line.
RemediationAI
No vendor-released patch identified at time of analysis. Organizations should consult the TR-CERT security bulletin at https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-0593 and contact Universal Software Inc. directly to obtain patch or upgrade guidance. As compensating controls, administrators should immediately audit role and permission assignments within FlexCity to identify and restrict which accounts hold access to sensitive access-control tiers, and enforce the principle of least privilege by removing unnecessary low-privilege accounts that could serve as an exploitation foothold. Network-level access to the FlexCity application should be restricted to trusted internal segments and known IP ranges to reduce the attack surface, accepting the trade-off of reduced accessibility for remote or distributed users. Monitoring for anomalous access patterns - particularly low-privilege accounts querying endpoints or data normally associated with higher access levels - can provide detection coverage until a vendor patch is available.
Flexcity versions before 1.0.36 contain an authentication bypass vulnerability that allows authenticated users to escala
Privilege Defined With Unsafe Actions, Missing Authentication for Critical Function vulnerability in Universal Software
Flexcity versions up to 1.0.36. is affected by authorization bypass through user-controlled key (CVSS 8.3).
Open redirect in Universal Software Inc. FlexCity (versions 5.536.0 through 11052026) enables remote unauthenticated att
FlexCity by Universal Software Inc. exposes an authentication rate-limiting failure (CWE-307) across versions 5.536.0 th
Same weakness CWE-862 – Missing Authorization
View allSame technique Authentication Bypass
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-46188
GHSA-xm45-c62q-jmp8