SB2026011996 - Multiple DrayTek routers update for WLAN driver
Published: January 19, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 18 secuirty vulnerabilities.
1) Stack-based buffer overflow (CVE-ID: CVE-2025-20732)
The vulnerability allows a local application to perform service disruption.
The vulnerability exists due to an incorrect bounds check within wlan. A local application can perform service disruption.
2) Stack-based buffer overflow (CVE-ID: CVE-2025-20739)
The vulnerability allows a local application to perform service disruption.
The vulnerability exists due to an incorrect bounds check within wlan. A local application can perform service disruption.
3) Stack-based buffer overflow (CVE-ID: CVE-2025-20738)
The vulnerability allows a local application to perform service disruption.
The vulnerability exists due to an incorrect bounds check within wlan. A local application can perform service disruption.
4) Stack-based buffer overflow (CVE-ID: CVE-2025-20737)
The vulnerability allows a local application to execute arbitrary code.
The vulnerability exists due to an incorrect bounds check within wlan. A local application can execute arbitrary code.
5) Stack-based buffer overflow (CVE-ID: CVE-2025-20736)
The vulnerability allows a local application to perform service disruption.
The vulnerability exists due to an incorrect bounds check within wlan. A local application can perform service disruption.
6) Heap-based Buffer Overflow (CVE-ID: CVE-2025-20735)
The vulnerability allows a local application to execute arbitrary code.
The vulnerability exists due to an incorrect bounds check within wlan. A local application can execute arbitrary code.
7) Heap-based Buffer Overflow (CVE-ID: CVE-2025-20734)
The vulnerability allows a local application to perform service disruption.
The vulnerability exists due to an incorrect bounds check within wlan. A local application can perform service disruption.
8) Heap-based Buffer Overflow (CVE-ID: CVE-2025-20733)
The vulnerability allows a local application to execute arbitrary code.
The vulnerability exists due to an incorrect bounds check within wlan. A local application can execute arbitrary code.
9) Heap-based Buffer Overflow (CVE-ID: CVE-2025-20731)
The vulnerability allows a local application to perform service disruption.
The vulnerability exists due to an incorrect bounds check within wlan. A local application can perform service disruption.
10) Integer overflow (CVE-ID: CVE-2025-20710)
The vulnerability allows a local application to execute arbitrary code.
The vulnerability exists due to an integer overflow within wlan. A local application can execute arbitrary code.
11) Heap-based Buffer Overflow (CVE-ID: CVE-2025-20729)
The vulnerability allows a local application to perform service disruption.
The vulnerability exists due to an incorrect bounds check within wlan. A local application can perform service disruption.
12) Out-of-bounds read (CVE-ID: CVE-2025-20724)
The vulnerability allows a local application to gain access to sensitive information.
The vulnerability exists due to an incorrect bounds check within wlan. A local application can gain access to sensitive information.
13) Heap-based Buffer Overflow (CVE-ID: CVE-2025-20720)
The vulnerability allows a local application to execute arbitrary code.
The vulnerability exists due to an incorrect bounds check within wlan. A local application can execute arbitrary code.
14) Stack-based buffer overflow (CVE-ID: CVE-2025-20719)
The vulnerability allows a local application to execute arbitrary code.
The vulnerability exists due to an incorrect bounds check within wlan. A local application can execute arbitrary code.
15) Stack-based buffer overflow (CVE-ID: CVE-2025-20718)
The vulnerability allows a local application to execute arbitrary code.
The vulnerability exists due to an incorrect bounds check within wlan. A local application can execute arbitrary code.
16) Out-of-bounds write (CVE-ID: CVE-2025-20716)
The vulnerability allows a local application to perform service disruption.
The vulnerability exists due to an incorrect bounds check within wlan. A local application can perform service disruption.
17) Out-of-bounds write (CVE-ID: CVE-2025-20715)
The vulnerability allows a local application to perform service disruption.
The vulnerability exists due to an incorrect bounds check within wlan. A local application can perform service disruption.
18) Improper Validation of Specified Type of Input (CVE-ID: CVE-2025-20711)
The vulnerability allows a local application to execute arbitrary code.
The vulnerability exists due to an incorrect bounds check within wlan. A local application can execute arbitrary code.
Remediation
Install update from vendor's website.