CVE-2026-25953 (GCVE-0-2026-25953)

Vulnerability from cvelistv5 – Published: 2026-02-25 20:27 – Updated: 2026-02-26 15:55
VLAI
Title
FreeRDP has heap-use-after-free in xf_AppUpdateWindowFromSurface (freed appWindow)
Summary
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, `xf_AppUpdateWindowFromSurface` reads from a freed `xfAppWindow` because the RDPGFX DVC thread obtains a bare pointer via `xf_rail_get_window` without any lifetime protection, while the main thread can concurrently delete the window through a fastpath window-delete order. Version 3.23.0 fixes the issue.
Severity
5.5 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-26 15:55 UTC
CWE
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7637 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
FreeRDP FreeRDP Affected: < 3.23.0
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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    "dateReserved": "2026-02-09T17:13:54.065Z",
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          },
          {
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            "value": "FreeRDP es una implementaci\u00f3n gratuita del Protocolo de Escritorio Remoto. Antes de la versi\u00f3n 3.23.0, \u0027xf_AppUpdateWindowFromSurface\u0027 lee de un \u0027xfAppWindow\u0027 liberado porque el hilo RDPGFX DVC obtiene un puntero sin formato a trav\u00e9s de \u0027xf_rail_get_window\u0027 sin ninguna protecci\u00f3n de vida \u00fatil, mientras que el hilo principal puede eliminar concurrentemente la ventana a trav\u00e9s de una orden de eliminaci\u00f3n de ventana de ruta r\u00e1pida. La versi\u00f3n 3.23.0 corrige el problema."
          }
        ],
        "id": "CVE-2026-25953",
        "lastModified": "2026-06-17T10:25:28.913",
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                "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
                "modifiedVulnIntegrityImpact": "NOT_DEFINED",
                "privilegesRequired": "NONE",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "NONE",
                "valueDensity": "NOT_DEFINED",
                "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
                "version": "4.0",
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T07:22:30+00:00",
      "cve": "CVE-2026-25953",
      "id": "CVE-2026-25953",
      "initial_release_date": "2026-02-25T20:27:00.424000+00:00",
      "product_status:known_affected": "31",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "freerdp: FreeRDP: Denial of Service due to use-after-free vulnerability in window handling",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-25953.json",
      "version": "3"
    }
  }
}



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