Security readout for executives and security teams
Plain-English summary
TCMAN GIM 8.0 and 11.0 expose webservice methods that reportedly lack proper authorization. A remote unauthenticated attacker may obtain information. The business concern is confidentiality loss from exposed GIM services, especially if the webservice is reachable from untrusted networks.
Executive priority
Treat this as a high-priority confidentiality risk if TCMAN GIM is deployed, especially on externally reachable systems. There is no cited active exploitation, but unauthenticated remote information access warrants prompt inventory, exposure reduction, and vendor-guided remediation.
Technical view
CVE-2021-40851 is described as improper authentication/authorization affecting methods listed under /PC/WebService.asmx in TCMAN GIM 8.0 and 11.0. CVSS 3.1 is 7.5: network reachable, low complexity, no privileges, no user interaction, high confidentiality impact, no integrity or availability impact stated.
Likely exposure
Exposure is likely limited to organizations running TCMAN GIM versions 8.0 or 11.0 with the affected webservice reachable. Internet-facing or broadly accessible internal deployments carry higher concern. The sources do not identify other affected products or versions.
Exploitation context
The source bundle does not cite active exploitation, public exploit code, or CISA KEV listing. Risk still matters because the vulnerability is remote, unauthenticated, low complexity, and tied to high confidentiality impact.
Researcher notes
The title references SQL injection, but the provided description and CWE identify improper authentication/lack of authorization. Do not assume SQL injection mechanics from this bundle alone. Evidence supports unauthenticated webservice information exposure for GIM 8.0 and 11.0 only.
Mitigation direction
- Check TCMAN or INCIBE guidance for applicable fixes or vendor-approved workarounds.
- Inventory TCMAN GIM deployments and identify versions 8.0 and 11.0.
- Restrict access to /PC/WebService.asmx to trusted networks where operationally feasible.
- Review exposed webservices for proper authentication and authorization controls.
- Prioritize remediation for internet-facing or sensitive-data environments.
Validation and detection
- Confirm whether TCMAN GIM 8.0 or 11.0 is deployed.
- Determine whether /PC/WebService.asmx is reachable from untrusted networks.
- Review application logs for unexpected unauthenticated webservice access.
- Verify compensating access controls are enforced before and after remediation.
- Document affected hosts, exposure path, and remediation status.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-287: Credential and account abuse lookup
Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupDatabase behavior lookup
The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-40851 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.incibe-cert.es/en/early-warning/security-advisories/tcman-gim-sql-improper-authenticationCVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Authentication
Improper Authentication represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.