Incorrect authentication in GTT´s group OpenSIAC
Priority MEDIUM 48CWE-287Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-287.
Summary
Incorrect authentication vulnerability in OpenSIAC, which could allow an attacker to impersonate a person using Cl@ve as an authentication method.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00355 29th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-41064
- 2026-10-03 Alias added: GHSA-g499-c2w5-hrjq
References
More GTT vulnerabilities
- TI-2025-12750 Bypass in the authentication method of the GTT Sistema de Información Tributario application CVSS 4.0CRITICAL 9.3
Sources
- CVE-2025-41064 · CVE Program
- CVE-2025-41064 · NVD
- FIRST EPSS
- GHSA-g499-c2w5-hrjq · GitHub Advisory Database · CC BY 4.0
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