Security readout for executives and security teams
Plain-English summary
TCMAN GIM 8.0 and 11.0 contain an open redirect. A crafted link could send a user from a trusted GIM URL to an attacker-controlled page, supporting phishing or information capture. It does not indicate server takeover, but it can undermine user trust and expose sensitive information if users follow malicious links.
Executive priority
Treat as a moderate phishing and trust-abuse risk, not an infrastructure compromise signal. Address it through normal vulnerability management, with higher priority for external portals or environments handling sensitive information.
Technical view
CWE-601 open redirect in TCMAN GIM versions 8.0 and 11.0. CVSS 3.1 score 6.1: network reachable, low complexity, no privileges, user interaction required, changed scope, low confidentiality and integrity impact, no availability impact. The public bundle does not name a specific vulnerable parameter or fixed release.
Likely exposure
Exposure is limited to organizations using TCMAN GIM 8.0 or 11.0. Internet-facing portals increase phishing usefulness because attackers can abuse trusted application links. The sources do not identify other affected versions, CPEs, hosted services, or deployment conditions.
Exploitation context
The CVE is not listed as CISA KEV in the provided bundle, and no cited source claims active exploitation. Exploitation requires user interaction, likely through a malicious link. Public details are sparse, so do not assume broad exploitation or reliable detection patterns from these sources alone.
Researcher notes
Evidence supports an open redirect classification and CVSS 6.1 rating, but public detail is limited. The bundle does not provide affected endpoints, parameters, proof-of-concept detail, exploit telemetry, or a named patch. Avoid extrapolating beyond TCMAN GIM 8.0 and 11.0.
Mitigation direction
- Check TCMAN and INCIBE guidance for fixed versions or vendor-approved configuration changes.
- Inventory TCMAN GIM deployments and identify versions 8.0 and 11.0.
- Prioritize updates or compensating controls for internet-facing GIM instances.
- Educate users to treat unexpected GIM links with caution until remediation is complete.
Validation and detection
- Confirm installed TCMAN GIM versions against the affected 8.0 and 11.0 list.
- Review application access logs for suspicious redirect-like navigation patterns.
- Verify whether vendor guidance names a patched release or configuration mitigation.
- Track remediation status for each exposed GIM instance.
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-601: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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 lookupCVE-2021-40852 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
- Medium
- CVSS
- 6.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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:R/S:C/C:L/I:L/A:N2.82.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.1MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.incibe-cert.es/en/early-warning/security-advisories/tcman-gim-open-redirect-vulnerabilityCVE 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.
URL Redirection to Untrusted Site ('Open Redirect')
URL Redirection to Untrusted Site ('Open Redirect') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.