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CVE-2026-36355

HighPublished

The rtl8192cd Wi-Fi kernel driver in the Realtek rtl819x Jungle SDK (all known versions through v3.4.14B) does not perform any access control checks on the...

Published: May 5, 2026
Updated: Jul 5, 2026
Assigning CNA: mitre
Evidence observed: May 27, 2026

Primary CVSS

7.7/ 10High

nvd · CVSS 3.1

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

EPSS probability estimate

0.7%

Low · next 30 days

Percentile: 50.1%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

The rtl8192cd Wi-Fi kernel driver in the Realtek rtl819x Jungle SDK (all known versions through v3.4.14B) does not perform any access control checks on the write_mem (ioctl 0x89F5) and read_mem (ioctl 0x89F6) debug handlers, which are compiled into production builds via the unconditionally defined _IOCTL_DEBUG_CMD_ macro in 8192cd_cfg.h

Sources

CVE-2026-36355Exploit
CVE-2026-36355: Realtek rtl819x Jungle SDK - Unauthenticated Kernel Memory Read/Write via Debug ioctls
Realtek rtl819x - Local PrivilegeExploit
Daniil Gordeev · linux · May 27, 2026

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