CVE-2025-41064 Incorrect authentication in GTT´s group OpenSIAC
Attackers can impersonate users via Cl@ve authentication in OpenSIAC, leading to unauthorized access and account takeover.
- 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-2025-41064?
CVE-2025-41064 is a critical authentication bypass vulnerability in GTT OpenSIAC, published on 2 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Incorrect authentication vulnerability in OpenSIAC, which could allow an attacker to impersonate a person using Cl@ve as an authentication method.
Weakness: CWE-287
Which versions are affected by CVE-2025-41064?
How do I fix CVE-2025-41064?
No fix has been published for CVE-2025-41064 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-2025-41064 being exploited?
There is no known exploitation of CVE-2025-41064 in the wild and no public exploit code.
Sources
Also known as GHSA-g499-c2w5-hrjq.