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CVE-2026-100740— D-Link DIR-895L L2TP Control Channel tunnel.c tunnel_set_params out-of-bounds write

Quick assessment

Affected
D-Link DIR-895L
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 D-Link DIR-895L 设备的固件版本 A1_102b07 中检测到一个漏洞。受影响的是 L2TP 控制通道解析器组件中 文件里的 函数。通过对该函数进行特定操作，可触发越界写入漏洞。该攻击可以远程发起。目前漏洞利用代码已公开，且可能被用于实际攻击。

CVSS 9.9 · Critical EPSS 0.45% · P37

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-100740

Vulnerability Information
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Vulnerability Title
D-Link DIR-895L L2TP Control Channel tunnel.c tunnel_set_params out-of-bounds write
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was detected in D-Link DIR-895L A1_102b07. Impacted is the function tunnel_set_params of the file tunnel.c of the component L2TP Control Channel Parser. Performing a manipulation results in out-of-bounds write. The attack may be initiated remotely. The exploit is now public and may be used.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
D-Link DIR-895L A1_102b07 cpe:2.3:h:d-link:dir-895l:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-100740

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III. Intelligence Information for CVE-2026-100740

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Vendor Pages for CVE-2026-100740 (1)

Other References for CVE-2026-100740 (5)

IV. Related Vulnerabilities

Same product: DIR-895L
Same vendor: D-Link
Same weakness: CWE-787

V. Comments for CVE-2026-100740

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