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CVE Record

CVE-2021-4046: TCMAN GIM Cross-Site Scripting (XSS)

The m_txtNom y m_txtCognoms parameters in TCMAN GIM v8.01 allow an attacker to perform persistent XSS attacks. This vulnerability could be used to carry out a number of browser-based attacks including browser hijacking or theft of sensitive data.

MediumCVSS 5.4Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

TCMAN GIM v8.01 has a stored cross-site scripting flaw in name-related fields. A low-privileged attacker could save malicious content that later runs in another user's browser, potentially exposing sensitive data or affecting the user's session.

Executive priority

Handle as a moderate-priority application security issue. It is not presented as actively exploited, but stored XSS can affect trusted user sessions and sensitive browser data when vulnerable systems are in use.

Technical view

CVE-2021-4046 is CWE-79 persistent XSS in the m_txtNom and m_txtCognoms parameters of TCMAN GIM v8.01. CVSS 3.1 is 5.4: network reachable, low complexity, low privileges, user interaction required, changed scope, low confidentiality and integrity impact, no availability impact.

Likely exposure

Exposure appears limited to organizations running TCMAN GIM v8.01. The supplied record marks other versions as unaffected by default, but evidence in the bundle does not define broader version ranges.

Exploitation context

The CVE is not listed as KEV in the supplied bundle, and no cited source states active exploitation. Abuse would require an attacker with some access to store content and a user to view the affected data.

Researcher notes

The bundle provides affected version, parameters, CWE, and CVSS, but does not include patch version, workaround details, or exploit-in-the-wild evidence. Avoid expanding affected products or versions beyond TCMAN GIM v8.01.

Mitigation direction

  • Inventory TCMAN GIM deployments and identify any v8.01 instances.
  • Check TCMAN or INCIBE guidance for confirmed patches or workarounds.
  • Prioritize remediation for internet-accessible or broadly used GIM instances.
  • Limit GIM access to required users until remediation is confirmed.
  • Review stored name fields for suspicious content before and after remediation.

Validation and detection

  • Confirm whether any production or test systems run TCMAN GIM v8.01.
  • Map which user roles can modify m_txtNom or m_txtCognoms values.
  • Verify whether vendor guidance names an updated fixed release.
  • Review application data and logs for suspicious stored script-like content.
  • Confirm remediation with a safe, non-exploit validation method approved by the vendor.
Prepared
Confidence
medium
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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 · medium confidence lookup

CWE-79: 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.

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cve · low confidence lookup

CVE-2021-4046 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.4 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Official CVE source material

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.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
5.4CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N2.32.7Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

5.4Medium
CVSS 3.1 vector shape for CVE-2021-4046Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
TCMANGIM8.01unaffected
Weakness

CWE details

CWE-79

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.