CVE-2026-108971: D-Link DCS-930L Emergency HTTP Recovery Server bootloader_region.bin mpfd_decode signature verification

Severity: critical (CVSS 9.6 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-13 · updated 2026-10-14
Weakness: CWE-345

Description

A flaw has been found in D-Link DCS-930L B1.08B4. This impacts the function mpfd_decode of the file bootloader_region.bin of the component Emergency HTTP Recovery Server. Executing a manipulation of the argument firmware can lead to improper verification of cryptographic signature. The attack may be performed from remote. The exploit has been published and may be used.

Affected products

D-Link DCS-930L: B1.08B4

References

https://github.com/sweethub521/somevul/blob/main/dlink-dcs930l-bootloader-emergency-room-flash.md
https://vuldb.com/cve/CVE-2026-108971
https://vuldb.com/submit/999605
https://vuldb.com/vuln/416789
https://vuldb.com/vuln/416789/cti
https://www.dlink.com/

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