CVE-2025-41064
Incorrect authentication in GTT´s group OpenSIAC
Incorrect authentication vulnerability in OpenSIAC, which could allow an attacker to impersonate a person using Cl@ve as an authentication method.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Incorrect authentication in GTT´s group OpenSIAC
Incorrect authentication vulnerability in OpenSIAC, which could allow an attacker to impersonate a person using Cl@ve as an authentication method.
- Record
CVE-2025-41064- CVSS 4.0
- 9.3 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - Weakness
- CWE-287
- Updated
- 2026-11-02
EUVDEUVD-2025-32666
Incorrect authentication vulnerability in OpenSIAC, which could allow an attacker to impersonate a person using Cl@ve as an authentication method.
- Record
EUVD-2025-32666- CVSS 4.0
- 9.3 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-g499-c2w5-hrjq
Incorrect authentication vulnerability in OpenSIAC, which could allow an attacker to impersonate...
Incorrect authentication vulnerability in OpenSIAC, which could allow an attacker to impersonate a person using Cl@ve as an authentication method.
- Record
GHSA-g499-c2w5-hrjq- CVSS 4.0
- 9.3 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Weakness
- CWE-287
- Updated
- 2026-11-02
NVD
Incorrect authentication vulnerability in OpenSIAC, which could allow an attacker to impersonate a person using Cl@ve as an authentication method.
- Record
CVE-2025-41064- CVSS 4.0
- 9.3 Critical
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Weakness
- CWE-287
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-41064 is a critical vulnerability (CVSS 9.3) in Gtt Opensiac, published October 2, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.36%, the 29th percentile. No source names a fixed version.