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Vulnerability record · CVE-2026-86510 · published 8 September 2026

CVE-2026-86510: Memory buffer overflow vulnerability

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.

8.6 CVSS 4.0 High EPSS 0.51% · top 58.8% CWE-119 · Memory buffer overflowCWE-787 · Out-of-bounds write Deferred
8.6CVSS 4.0 base score, v2 9.0
0.51%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
6References
8 Sep 2026Last modified by NVD

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.

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

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

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Source: NIST National Vulnerability Database (record CVE-2026-86510), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.