CVE-2025-41064Network attack vector

Unauthenticated person impersonation through Cl@ve authentication

Published Oct 2, 2025 · Updated Oct 2, 2025

Improper authentication in OpenSIAC 1.0 allows remote attackers to impersonate a person when Cl@ve is the identification method. INCIBE and GTT have not published the affected authentication locus or the incorrect operation performed on Cl@ve data. Exposure is limited to deployments using Cl@ve; VALIDe and digital-certificate deployments are not affected, and the reported impact is account impersonation.

CVSS severity9.3
Critical
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Improper authentication in OpenSIAC 1.0 allows remote attackers to impersonate a person when Cl@ve is the identification method. INCIBE and GTT have not published the affected authentication locus or the incorrect operation performed on Cl@ve data. Exposure is limited to deployments using Cl@ve; VALIDe and digital-certificate deployments are not affected, and the reported impact is account impersonation.

The record

CVE
CVE-2025-41064
Published
Oct 2, 2025
Updated
Oct 2, 2025
Vendor
Gestión Tributaria Territorial
Product
OpenSIAC
Classifications
CWE-287
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 2, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 2, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Gestión Tributaria Territorial · OpenSIACversion=1.0

Published CVSS scores

9.3INCIBECVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo