CVE-2026-1740 EFM ipTIME A8004T Hidden Hiddenloginsetup timepro.cgi httpcon_check_session_url improper authentication
Remote attackers can bypass authentication on EFM ipTIME A8004T routers via the timepro.cgi interface, 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-2026-1740?
CVE-2026-1740 is a medium-severity authentication bypass vulnerability in EFM ipTIME A8004T, published on 2 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was found in EFM ipTIME A8004T 14.18.2. This impacts the function httpcon_check_session_url of the file /cgi/timepro.cgi of the component Hidden Hiddenloginsetup Interface. The manipulation results in improper authentication. The attack may be performed from remote. The exploit has been made public and could 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-2026-1740?
It affects 1 product.
Products include Iptime A8004t Firmware.
How do I fix CVE-2026-1740?
No fix has been published for CVE-2026-1740 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-2026-1740 being exploited?
There is no known exploitation of CVE-2026-1740 in the wild and no public exploit code.
Other vulnerabilities in EFM ipTIME A8004T
Sources
Also known as GHSA-33w6-9gm9-5rj4.