# CVE-2026-86510

## Summary

- **CVE ID:** CVE-2026-86510
- **Severity:** CRITICAL
- **CVSS Score:** 9.9 (CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P)
- **CWE:** CWE-787, CWE-119
- **Published:** Sep 8, 2026
- **Last Modified:** Sep 8, 2026

## Description

A vulnerability has been found in D-Link DIR-822A A_101. Affected is the function tunnel_set_params of the component L2TP Control Message Parser. Such manipulation leads to out-of-bounds write. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

## Affected Products

- D-Link — DIR-822A (A_101)

## References

- [CNA](https://vuldb.com/vuln/399663)
- [CNA](https://vuldb.com/vuln/399663/cti)
- [CNA](https://vuldb.com/cve/CVE-2026-86510)
- [CNA](https://vuldb.com/submit/906300)
- [CNA](https://tzh00203.notion.site/D-Link-DIR-822A-L2TP-Host-Name-AVP-Out-of-Bounds-Write-33cb5c52018a80a7af5fdc1af3d5aa73)
- [CNA](https://www.dlink.com/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.46%
- **EPSS Percentile:** 38.6

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-09._