CVE-2026-108971 D-Link DCS-930L - Authentication Bypass

D-Link DCS-930L contains a broken authentication caused by improper verification of cryptographic signature in Emergency HTTP Recovery Server's mpfd_decode function, letting remote attackers bypass signature verification, exploit requires crafted firmware argument.

CVSS base score 9.6 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.22% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Authentication
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Published
13 October 2026
Updated
15 October 2026
Weakness
CWE-345

Vendor fix

Update to the latest firmware version provided by D-Link.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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