CVE-2026-78168 EFM ipTIME T24000M Session Validation httpcon_check_session_url improper authentication

Critical 9.3 Published Updated

Remote attackers can bypass authentication in EFM ipTIME T24000M routers due to improper session validation, potentially gaining unauthorized access.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2026-78168?

CVE-2026-78168 is a critical authentication bypass vulnerability in EFM ipTIME T24000M, published on 24 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A security vulnerability has been detected in EFM ipTIME T24000M up to 14.20.0. This affects the function httpcon_check_session_url of the component Session Validation Handler. Such manipulation leads to improper authentication. The attack can be executed remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-287

Which versions are affected by CVE-2026-78168?

How do I fix CVE-2026-78168?

No fix has been published for CVE-2026-78168 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2026-78168 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-78168 exists.

Sources

Also known as GHSA-r2qf-9984-83jj.

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