CVE-2026-86297

D-Link DIR-605 L2TP Control Message tunnel.c tunnel_set_params off-by-one

Published Sep 7, 2026 CVSS 4.0 · 9.2 Critical EPSS 1.1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title D-Link DIR-605 L2TP Control Message tunnel.c tunnel_set_params off-by-one
First Time appeared D-link
D-link dir-605
Weaknesses CWE-189
CWE-193
CPEs cpe:2.3:h:d-link:dir-605:*:*:*:*:*:*:*:*
Vendors & Products D-link
D-link dir-605
References
Metrics cvssV2_0

{'score': 7.6, 'vector': 'AV:N/AC:H/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 8.1, 'vector': 'CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R'}

cvssV4_0

{'score': 9.2, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulDB
Published
Updated
Sep 9, 2026, 2:22 PM
Reserved
Sep 6, 2026, 4:18 PM
Status
Deferred
Published
Sep 7, 2026, 11:17 AM
Modified
Sep 9, 2026, 3:17 PM