CVE-2025-10855 Overview
CVE-2025-10855 is an Authorization Bypass Through User-Controlled Key vulnerability [CWE-639] in Teknoera, a product developed by Solvera Software Services Trade Inc. The flaw permits attackers to exploit trusted identifiers to access resources belonging to other users. All Teknoera releases up to and including build 01102025 are affected. The issue is exploitable remotely over the network without authentication or user interaction. Turkey's national CERT (USOM) issued security notification TR-26-0003 documenting the weakness.
Critical Impact
Unauthenticated remote attackers can manipulate user-controlled identifiers to access confidential records belonging to other tenants, resulting in unauthorized data exposure.
Affected Products
- Solvera Software Services Trade Inc. Teknoera through build 01102025
Discovery Timeline
- 2026-01-22 - CVE-2025-10855 published to NVD
- 2026-04-15 - Last updated in NVD database
Technical Details for CVE-2025-10855
Vulnerability Analysis
The vulnerability is an Insecure Direct Object Reference (IDOR) class flaw categorized under [CWE-639]: Authorization Bypass Through User-Controlled Key. Teknoera accepts user-supplied identifiers in requests and uses those identifiers to retrieve records without verifying whether the requesting principal owns or is authorized to view the referenced object. An attacker who can enumerate or guess identifier values can retrieve arbitrary records.
The attack requires no authentication, no privileges, and no user interaction. Exploitation impacts confidentiality, while integrity and availability remain unaffected based on the published CVSS metrics. Disclosure of stored records is the primary outcome of successful exploitation.
Root Cause
The root cause is missing or insufficient server-side authorization checks on object identifiers exposed in request parameters. The application trusts client-supplied keys as a proxy for access rights. Authorization decisions should be enforced against the authenticated session and the ownership metadata of the requested resource, not against the value of the identifier itself.
Attack Vector
An attacker sends crafted HTTP requests to Teknoera endpoints, substituting valid resource identifiers with values referencing records owned by other users. Because no ownership check occurs, the server returns the requested data. Sequential numeric identifiers or predictable token formats accelerate enumeration. Refer to the USOM Security Notification TR-26-0003 for additional technical context.
Detection Methods for CVE-2025-10855
Indicators of Compromise
- Repeated requests from a single client iterating identifier parameters in URL paths or query strings.
- HTTP responses returning records associated with identifiers outside the authenticated user's expected scope.
- Sudden spikes in successful GET responses against record-retrieval endpoints from non-administrative accounts.
Detection Strategies
- Inspect web server and application logs for sequential or non-sequential enumeration patterns against identifier-bearing endpoints.
- Correlate session identity with the ownership of each returned resource and flag mismatches.
- Deploy WAF rules to detect rapid identifier iteration and unusual parameter tampering.
Monitoring Recommendations
- Establish baselines for per-user record access rates and alert on deviations.
- Forward Teknoera application logs to centralized analytics for behavioral correlation.
- Monitor outbound data volumes from the Teknoera application tier to detect bulk extraction.
How to Mitigate CVE-2025-10855
Immediate Actions Required
- Contact Solvera Software Services Trade Inc. to obtain a fixed Teknoera build superseding 01102025.
- Restrict network exposure of Teknoera endpoints to trusted networks or behind authenticated reverse proxies until patched.
- Audit application logs for prior exploitation by reviewing identifier-access patterns since deployment.
Patch Information
Apply the vendor-supplied update that resolves CVE-2025-10855. At the time of publication, the USOM Security Notification TR-26-0003 is the authoritative reference for remediation status. Verify version metadata after patching to confirm the build is later than 01102025.
Workarounds
- Enforce server-side authorization checks that validate ownership of every requested object against the authenticated session.
- Replace predictable numeric identifiers with unguessable values such as UUIDv4 to raise the cost of enumeration.
- Deploy a WAF rule set to throttle and alert on rapid sequential parameter changes targeting record endpoints.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
