PT-2026-30645 · Realtek · Realtek Rtl8188Eu

Published 2026-01-05 · Updated 2026-04-06 · CVE-2026-21375

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions versions prior to 2.3

Description There is a memory corruption issue when accessing an output buffer without validating its size during IOCTL processing.

Recommendations Update to version 2.3 or later.

Fix

Buffer Over-read

Weakness Enumeration

CWE-126

Related Identifiers

BDU:2026-05033

CVE-2026-21375

Affected Products

Realtek Rtl8188Eu

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-21375 · Security Note
• https://bdu.fstec.ru/vul/2026-05033 · Security Note
• https://docs.qualcomm.com/product/publicresources/securitybulletin/april-2026-bulletin.html · Vendor Advisory
• https://twitter.com/CVEnew/status/2041223998059450837 · Twitter Post