github - ghsa-m856-89mj-r6pg

GHSA-M856-89MJ-R6PG

Vulnerability from github – Published: 2025-10-01 15:30 – Updated: 2025-10-01 15:30

Details

Improper handling of symbolic links in the TeamViewer Full Client and Host for Windows — in versions prior to 15.70 of TeamViewer Remote and Tensor — allows an attacker with local, unprivileged access to a device lacking adequate malware protection to escalate privileges by spoofing the update file path. This may result in unauthorized access to sensitive information.

Severity ?

4.7 (Medium)


                  
                    CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2025-41421"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-59"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-01T14:15:39Z",
    "severity": "MODERATE"
  },
  "details": "Improper handling of symbolic links in the TeamViewer Full Client and Host for Windows \u2014 in versions prior to 15.70 of TeamViewer Remote and Tensor \u2014 allows an attacker with local, unprivileged access to a device lacking adequate malware protection to escalate privileges by spoofing the update file path. This may result in unauthorized access to sensitive information.",
  "id": "GHSA-m856-89mj-r6pg",
  "modified": "2025-10-01T15:30:34Z",
  "published": "2025-10-01T15:30:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-41421"
    },
    {
      "type": "WEB",
      "url": "https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2025-1004"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-41421 (GCVE-0-2025-41421)

Vulnerability from cvelistv5 – Published: 2025-10-01 13:48 – Updated: 2025-10-01 13:59

Summary

Severity ?

4.7 (Medium)


                        
                          CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

CWE

CWE-59 - Improper Link Resolution Before File Access ('Link Following')

Assigner

References

URL

Tags

https://www.teamviewer.com/en/resources/trust-cen…

Impacted products

Vendor

Product

Version

TeamViewer

Full Client

Affected: 11.0.0 , < 15.70 (custom)

TeamViewer

Host

Affected: 11.0.0 , < 15.70 (custom)

Credits

@TwoSevenOneT (X) with ZeroSalarium.com

Show details on NVD website

JSON

To clipboard

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  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-41421",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-01T13:59:12.175007Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
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        "providerMetadata": {
          "dateUpdated": "2025-10-01T13:59:17.408Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
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          "defaultStatus": "unaffected",
          "platforms": [
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          ],
          "product": "Full Client",
          "vendor": "TeamViewer",
          "versions": [
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              "status": "affected",
              "version": "11.0.0",
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          "vendor": "TeamViewer",
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              "status": "affected",
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          "type": "finder",
          "value": "@TwoSevenOneT (X) with ZeroSalarium.com"
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            "attackVector": "LOCAL",
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            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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      "references": [
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        }
      ],
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              "value": "Update to the latest version.\n\n\u003cbr\u003e"
            }
          ],
          "value": "Update to the latest version."
        }
      ],
      "source": {
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      },
      "title": "Privilege Escalation via Symbolic Link Spoofing in TeamViewer Client",
      "x_generator": {
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  "cveMetadata": {
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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-M856-89MJ-R6PG

CVE-2025-41421 (GCVE-0-2025-41421)

Tags

Sightings

Nomenclature