CVE-2026-36355: n/a
CVE-2026-36355 is a high-severity vulnerability in the rtl8192cd Wi-Fi kernel driver of the Realtek rtl819x Jungle SDK up to version 3. 4. 14B. The driver includes debug handlers for reading and writing memory that do not enforce any access control checks. These debug handlers are compiled into production builds due to an always-defined macro, potentially allowing unauthorized local users to read and write kernel memory. The vulnerability has a CVSS score of 7. 7, indicating a significant impact on confidentiality and integrity without requiring user interaction or privileges. No official patch or remediation guidance is currently available, and no exploits are known in the wild. The affected software is not a cloud service, and no geographic targeting is indicated.
AI Analysis
Technical Summary
The rtl8192cd Wi-Fi kernel driver in the Realtek rtl819x Jungle SDK (all known versions through v3.4.14B) contains debug ioctl handlers (write_mem ioctl 0x89F5 and read_mem ioctl 0x89F6) that lack access control checks. These handlers are included in production builds due to the unconditional definition of the _IOCTL_DEBUG_CMD_ macro in the 8192cd_cfg.h file. This design flaw allows local attackers to perform unauthorized memory read and write operations in kernel space, potentially leading to confidentiality breaches and integrity violations. The vulnerability is tracked as CVE-2026-36355 with a CVSS 3.1 base score of 7.7 (AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N). No patch or official remediation level has been published, and no known exploits exist in the wild.
Potential Impact
This vulnerability allows unauthorized local users to read and write kernel memory via debug ioctl handlers without any access control. The impact includes high confidentiality and integrity loss, as attackers can potentially access sensitive information or alter kernel memory contents. Availability is not affected. The vulnerability does not require privileges or user interaction but does require local access to the device. No known exploits have been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should restrict local access to affected devices and consider disabling or recompiling the driver without the _IOCTL_DEBUG_CMD_ macro if possible. Monitor vendor communications for updates on patches or official mitigations.
CVE-2026-36355: n/a
Description
CVE-2026-36355 is a high-severity vulnerability in the rtl8192cd Wi-Fi kernel driver of the Realtek rtl819x Jungle SDK up to version 3. 4. 14B. The driver includes debug handlers for reading and writing memory that do not enforce any access control checks. These debug handlers are compiled into production builds due to an always-defined macro, potentially allowing unauthorized local users to read and write kernel memory. The vulnerability has a CVSS score of 7. 7, indicating a significant impact on confidentiality and integrity without requiring user interaction or privileges. No official patch or remediation guidance is currently available, and no exploits are known in the wild. The affected software is not a cloud service, and no geographic targeting is indicated.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The rtl8192cd Wi-Fi kernel driver in the Realtek rtl819x Jungle SDK (all known versions through v3.4.14B) contains debug ioctl handlers (write_mem ioctl 0x89F5 and read_mem ioctl 0x89F6) that lack access control checks. These handlers are included in production builds due to the unconditional definition of the _IOCTL_DEBUG_CMD_ macro in the 8192cd_cfg.h file. This design flaw allows local attackers to perform unauthorized memory read and write operations in kernel space, potentially leading to confidentiality breaches and integrity violations. The vulnerability is tracked as CVE-2026-36355 with a CVSS 3.1 base score of 7.7 (AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N). No patch or official remediation level has been published, and no known exploits exist in the wild.
Potential Impact
This vulnerability allows unauthorized local users to read and write kernel memory via debug ioctl handlers without any access control. The impact includes high confidentiality and integrity loss, as attackers can potentially access sensitive information or alter kernel memory contents. Availability is not affected. The vulnerability does not require privileges or user interaction but does require local access to the device. No known exploits have been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should restrict local access to affected devices and consider disabling or recompiling the driver without the _IOCTL_DEBUG_CMD_ macro if possible. Monitor vendor communications for updates on patches or official mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-04-06T00:00:00.000Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69fa2e1dcbff5d8610171cf2
Added to database: 5/5/2026, 5:51:25 PM
Last enriched: 5/5/2026, 6:06:37 PM
Last updated: 5/5/2026, 7:17:10 PM
Views: 2
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