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01 Record

CVE-2026-86297

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

CriticalPUBLISHEDCNA: VulDB
CNA base score9.2 CVSS v4.0CVSS: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
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02 Description

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

03 Exploitation and scoring

Exploitation
Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
SSVC decision
  • ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
1.12% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 65.9% of scored records. A rank, not a probability.
NVD base score
8.2 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS 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/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:X/V:X/RE:X/U:X
NVD analysis status
Deferred. NVD last modified this record on 2026-09-09.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-09-07 10:45Z1 MO AGO
Last updated
2026-09-09 14:22Z1 MO AGO
Reserved
2026-09-06
Assigning CNA
VulDB
Record state
PUBLISHED
Severity
Critical (CVSS 9.2)
CNA CVSS 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
Data version
5.2
Document digest
abcea95eea8e1465d78a0b0d160b9a6688c267b44131bffed9b0a35bcdd21297

05 Affected products

VendorProductVersionsPlatforms
D-LinkDIR-605B1v202WWB03—

06 References