CVE-2026-1815 Turkiye Electricity Transmission Corporation (TEİAŞ) CVE debrief

Who should care

Organizations or users running the affected TEİAŞ Mobile Application versions, especially teams responsible for mobile app deployment, identity/session management, and incident response. Security teams should also care if the app is used for operational access or handles sensitive user data, since the NVD vector indicates high confidentiality impact.

Technical summary

The issue is described as insufficient session expiration, which aligns with CWE-613 (Insufficient Session Expiration). The NVD vector is CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N, indicating network reachability, low attack complexity, required low privileges, and user interaction. In practical terms, session validity may persist beyond intended limits, increasing the risk of session hijacking if an attacker can obtain an active session token or otherwise reuse authenticated session state. The affected range provided in the source is versions 1.6.2 through before 1.13.

Defensive priority

Important, but not emergency-critical based on the supplied CVSS 5.7 score and the need for user interaction. Prioritize if the application is widely deployed, handles sensitive information, or lacks compensating controls such as short session lifetimes, reauthentication, token binding, or server-side session revocation.

Recommended defensive actions

• Upgrade the TEİAŞ Mobile Application to version 1.13 or later, as the affected range is listed as from 1.6.2 before 1.13.
• Review session management settings to ensure server-side session expiration is enforced and invalid sessions are rejected promptly.
• Shorten authentication token lifetimes where feasible and revoke sessions on logout, password reset, or account recovery events.
• Monitor for anomalous account activity that could indicate reused or stale sessions.
• If the app is externally distributed, confirm whether the vulnerable build is present in app stores, managed-device deployments, or internal sideload packages.
• Validate whether any downstream systems depend on the mobile app’s session state and apply compensating controls if patching is delayed.

Evidence notes

This debrief is based only on the supplied CVE/NVD metadata and the referenced Turkish cybersecurity bulletin. The source states: insufficient session expiration in TEİAŞ Mobile Application; affected versions from 1.6.2 before 1.13; CWE-613; CVSS vector CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N; NVD vulnStatus Deferred. Vendor attribution is not fully resolved in the supplied data, so the product name is taken from the vulnerability description rather than a normalized vendor/product record.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.