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CVE-2021-41159 (GCVE-0-2021-41159)

Vulnerability from cvelistv5 – Published: 2021-10-21 00:00 – Updated: 2024-08-04 02:59
VLAI
Title
Improper client input validation for FreeRDP gateway connections allows to overwrite memory
Summary
FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. All FreeRDP clients prior to version 2.4.1 using gateway connections (`/gt:rpc`) fail to validate input data. A malicious gateway might allow client memory to be written out of bounds. This issue has been resolved in version 2.4.1. If you are unable to update then use `/gt:http` rather than /gt:rdp connections if possible or use a direct connection without a gateway.
Severity
5.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
FreeRDP FreeRDP Affected: < 2.4.1
guessed Create a notification for this product.
Show details on NVD website
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    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2025-11-21T15:49:31+00:00",
      "cve": "CVE-2021-41159",
      "id": "CVE-2021-41159",
      "initial_release_date": "2021-10-21T00:00:00+00:00",
      "product_status:fixed": "600",
      "product_status:known_not_affected": "11",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "freerdp: improper client input validation for gateway connections allows to overwrite memory",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-41159.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-09-16T00:29:25Z",
      "cve": "CVE-2021-41159",
      "id": "CVE-2021-41159",
      "initial_release_date": "2023-02-15T03:37:43Z",
      "product_status:recommended": "213",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2021-41159",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-41159.json",
      "version": "22"
    }
  }
}



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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • 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.


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