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D-Link DIR-825M 1.1.8 LTE Fibocom Firmware Upgrade Handler Copies Unbounded User Input into a Fixed Stack Buffer, Enabling Unauthenticated Remote Code Execution

Last refreshed2026-09-28

Status: NEW  |  Advisory ID: CVE-2026-82593

Key Details

CVECVE-2026-82593
CVSS Score / Version9.9 (Critical) / CVSS v3.1
Updated2026-09-01
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS Proseattack vector is network; attack complexity is low; privileges required is low; user interaction is none; scope is changed; confidentiality impact is high; integrity impact is high; availability impact is high.
Classified asCWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

What to Know

A flaw has been found in D-Link DIR-825M 1.1.8. This impacts the function sub_41802C of the file /boafrm/formLtefotaUpgradeFibocom of the component LTE Module Firmware Upgrade. This manipulation of the argument fota_url causes stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been published and may be used. (NVD)

References

SourceReference
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-82593
CVEhttps://www.cve.org/CVERecord?id=CVE-2026-82593