CVE-2026-86297

A vulnerability was identified in D-Link DIR-605 B1v202WWB03. This issue affects the function tunnel_set_params of the file progs.gpl/pppd.alpha/l2tp/tunnel.c of the component L2TP Control Message Parser. Such manipulation of the argument peer_hostname  leads to off-by-one. The attack may be performed from remote. Attacks of this nature are highly complex. The exploitability is assessed as difficult. The exploit is publicly available and might be used.

Score

CVSS 4.0 9.2 Critical

Status

Deferred - cna@vuldb.com

Published

2026-09-07

Last modified

2026-09-09

Weaknesses

CWE-189, CWE-193

Affected products

• Dir-605 (D-link)

References

• https://tzh00203.notion.site/D-Link-DIR-605-L2TP-Host-Name-AVP-Out-of-Bounds-Write-33cb5c52018a809ba163f988c15fc1b7
• https://vuldb.com/cve/CVE-2026-86297
• https://vuldb.com/submit/906299
• https://vuldb.com/vuln/399459
• https://vuldb.com/vuln/399459/cti
• https://www.dlink.com/