CVE-2026-1816: OTP Bypass in TEİAŞ's Mobile Application

Severity: medium (CVSS 6.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-21 · updated 2026-07-23
Weakness: CWE-307

Description

Improper restriction of excessive authentication attempts vulnerability in Turkiye Electricity Transmission Corporation (TEİAŞ) Mobile Application allows Brute Force. This issue affects Mobile Application: from 1.6.2 before 1.13.

Affected products

Turkiye Electricity Transmission Corporation (TEİAŞ) Mobile Application: from 1.6.2 before 1.13 — fixed in 1.13

How to fix

Upgrade to a fixed version: Turkiye Electricity Transmission Corporation (TEİAŞ) Mobile Application 1.13. Check the vendor advisory for mitigations.

References

https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-0286

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