FlexCity/Kiosk: Authentication Bypass Using an Alternate Path or Channel
CVE-2026-1618 is a high-severity authentication bypass using an alternate path or channel vulnerability in FlexCity/Kiosk from Universal Software, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. The record lists version 1.0.36 as the first without the flaw, so updating FlexCity/Kiosk to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.43% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update FlexCity/Kiosk to 1.0.36 or a later version.
- Update Flexcity to 1.0.36 or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Universal Software | FlexCity/Kiosk | 1.0 up to, but not including, 1.0.36 | 1.0.36 |
| Uni-yaz | Flexcity | 1.0 up to, but not including, 1.0.36 | 1.0.36 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by CNA (usom.gov.tr).
Official description
Authentication Bypass Using an Alternate Path or Channel vulnerability in Universal Software Inc. FlexCity/Kiosk allows Privilege Escalation. This issue affects FlexCity/Kiosk: from 1.0 before 1.0.36.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Authentication Bypass Using an Alternate Path or Channel
The product requires authentication, but the product has an alternate path or channel that does not require authentication.
How developers prevent this class of flaw
- Funnel all access through a single choke point to simplify how users can access a resource. For every access, perform a check to determine if the user has permissions to access the resource.
More Authentication Bypass Using an Alternate Path or Channel vulnerabilities (CWE-288)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- usom.gov.tr/bildirim/tr-26-0065Third Party Advisory
Other references
Other vulnerabilities in FlexCity/Kiosk
- 8.3 High severity
- 8.8 High severity
Recent Authentication Bypass Using an Alternate Path or Channel vulnerabilities
- 9.8 Critical severity
- 9.8 Critical severity
- 9.8 Critical severity
- 9.8 Critical severity
- 9.8 Critical severity
- 9.8 Critical severity
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