---
id: CVE-2026-15586
title: OTP Brute-Force Account Takeover in Idvlabs Software's Ontime
summary: "Improper restriction of excessive authentication attempts vulnerability in İdvlabs Software and Consulting Services Inc. Ontime allows Brute Force.\n\nThis issue affects Ontime: through 2026-10-27.\n\_NOTE: The vendor was contacted early abo…"
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-307
vendor: İdvlabs Software and Consulting Services Inc.
product: Ontime
affected:
  - Ontime <= 2026-10-27
published: '2026-10-27'
updated: '2026-10-27'
sourceUpdated: '2026-10-27T12:32:04.384Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-15586'
references:
  - url: 'https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-1407'
tags:
  - cve.org
ingestedAt: '2026-10-27T16:11:59.324Z'
---

## Overview

Improper restriction of excessive authentication attempts vulnerability in İdvlabs Software and Consulting Services Inc. Ontime allows Brute Force.

This issue affects Ontime: through 2026-10-27.
 NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

## Affected

- `Ontime <= 2026-10-27`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.