CVE-2025-3699 Auth bypass in AE-200A
Remote attackers can bypass authentication to control air conditioning systems, disclose information, and tamper with firmware.
- 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-2025-3699?
CVE-2025-3699 is a critical authentication bypass vulnerability in Mitsubishi Electric Corporation AE-200A, published on 26 Jun 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Missing Authentication for Critical Function vulnerability in Mitsubishi Electric Corporation G-50 all versions, G-50-W all versions, G-50A all versions, GB-50 all versions, GB-50A all versions, GB-24A all versions, G-150AD all versions, AG-150A-A all versions, AG-150A-J all versions, GB-50AD all versions, GB-50ADA-A all versions, GB-50ADA-J all versions, EB-50GU-A all versions, EB-50GU-J all versions, AE-200J all versions, AE-200A all versions, AE-200E all versions, AE-50J all versions, AE-50A all versions, AE-50E all versions, EW-50J all versions, EW-50A all versions, EW-50E all versions, TE-200A all versions, TE-50A all versions, TW-50A all versions, and CMS-RMD-J all versions allows a remote unauthenticated attacker to bypass authentication and then control the air conditioning systems illegally, or disclose information in them by exploiting this vulnerability. In addition, the attacker may tamper with firmware for them using the disclosed information.
Weakness: CWE-306
Which versions are affected by CVE-2025-3699?
How do I fix CVE-2025-3699?
No fix has been published for CVE-2025-3699 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-2025-3699 being exploited?
There is no known exploitation of CVE-2025-3699 in the wild and no public exploit code.
Sources
Also known as GHSA-73r7-73gp-j7mv.