cvelistv5 - cve-2025-8300

CVE-2025-8300 (GCVE-0-2025-8300)

Vulnerability from cvelistv5 – Published: 2025-09-02 20:02 – Updated: 2025-09-03 14:32

Summary

Realtek rtl81xx SDK Wi-Fi Driver rtwlanu Heap-based Buffer Overflow Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Realtek rtl81xx SDK Wi-Fi driver. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the N6CSet_DOT11_CIPHER_DEFAULT_KEY function. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-26552.

Severity ?

8.8 (High)


                        
                          CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CWE

CWE-122 - Heap-based Buffer Overflow

Assigner

zdi

References

URL

Tags

https://www.zerodayinitiative.com/advisories/ZDI-…

x_research-advisory

Impacted products

	Vendor	Product	Version
	Realtek	rtl81xx SDK	Affected: 1030.38.712.2019

Show details on NVD website

JSON

To clipboard

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GHSA-5P4C-63P6-3PJP

Vulnerability from github – Published: 2025-09-02 21:30 – Updated: 2025-09-02 21:30

Details

The specific flaw exists within the N6CSet_DOT11_CIPHER_DEFAULT_KEY function. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-26552.

Severity ?

8.8 (High)


                  
                    CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2025-8300"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-122"
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    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-02T20:15:38Z",
    "severity": "HIGH"
  },
  "details": "Realtek rtl81xx SDK Wi-Fi Driver rtwlanu Heap-based Buffer Overflow Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Realtek rtl81xx SDK Wi-Fi driver. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.\n\nThe specific flaw exists within the N6CSet_DOT11_CIPHER_DEFAULT_KEY function. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-26552.",
  "id": "GHSA-5p4c-63p6-3pjp",
  "modified": "2025-09-02T21:30:58Z",
  "published": "2025-09-02T21:30:58Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-8300"
    },
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      "url": "https://www.zerodayinitiative.com/advisories/ZDI-25-883"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
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      "type": "CVSS_V3"
    }
  ]
}

FKIE_CVE-2025-8300

Vulnerability from fkie_nvd - Published: 2025-09-02 20:15 - Updated: 2025-09-10 15:00

Severity ?

8.8 (High) - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Summary

References

	URL	Tags
	zdi-disclosures@trendmicro.com	https://www.zerodayinitiative.com/advisories/ZDI-25-883/	Third Party Advisory

Impacted products

	Vendor	Product	Version
	realtek	wi-fi_usb_driver	*
	realtek	rtl8811au	-

JSON

To clipboard

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    }
  ],
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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

CVE-2025-8300 (GCVE-0-2025-8300)

GHSA-5P4C-63P6-3PJP

FKIE_CVE-2025-8300

Tags

Sightings

Nomenclature