CVE-2026-86510

CRITICAL 9.9

D-Link DIR-822A L2TP Control Message tunnel_set_params out-of-bounds write

CVSS Score

9.9

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-787 CWE-119
Vendor	d-link
Product	dir-822a
Published	Sep 8, 2026
Last Updated	Sep 8, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

D-Link / DIR-822A

A_101

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

🔍 tian (VulDB User)