---
title: "CVE-2026-100740: D-Link DIR-895L - Buffer Overflow"
description: "D-Link DIR-895L A1_102b07 contains a buffer overflow caused by out-of-bounds write in tunnel_set_params function of L2TP Control Channel Parser, letting remote attackers cause denial of service or code execution, exploit requires crafted network packets."
url: https://panop.io/threat-heartbeat/CVE-2026-100740/
---

# CVE-2026-100740 D-Link DIR-895L - Buffer Overflow

D-Link DIR-895L A1\_102b07 contains a buffer overflow caused by out-of-bounds write in tunnel\_set\_params function of L2TP Control Channel Parser, letting remote attackers cause denial of service or code execution, exploit requires crafted network packets.

CVSS base score 9.9 /10

Critical

CISA KEV

Not listed

Public exploit

Proof of concept available

Authentication

Required

EPSS

0.45% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-100740)

## Details

Type

Buffer Overflow

Impact

Denial Of Service, Remote Code Execution

CVSS vector

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

Published

27 September 2026

Updated

15 October 2026

Weakness

[CWE-119](https://cwe.mitre.org/data/definitions/119.html)

## Vendor fix

Update to the latest firmware version provided by D-Link.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-100740](https://nvd.nist.gov/vuln/detail/CVE-2026-100740)
- [https://www.dlink.com/](https://www.dlink.com/)
- [https://tzh00203.notion.site/D-Link-DIR-895L-L2TP-Host-Name-AVP-Out-of-Bounds-Write-33cb5c52018a8061b139cacc39d58fff](https://tzh00203.notion.site/D-Link-DIR-895L-L2TP-Host-Name-AVP-Out-of-Bounds-Write-33cb5c52018a8061b139cacc39d58fff)
- [https://vuldb.com/cve/CVE-2026-100740](https://vuldb.com/cve/CVE-2026-100740)
- [https://vuldb.com/submit/906303](https://vuldb.com/submit/906303)
- [https://vuldb.com/vuln/410614](https://vuldb.com/vuln/410614)
- [https://vuldb.com/vuln/410614/cti](https://vuldb.com/vuln/410614/cti)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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