What is CVE-2026-82593?

CVE-2026-82593 is a critical-severity vulnerability in D-Link Dir-825m, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.9/10. Published 2026-08-31.

How severe is CVE-2026-82593?

Critical severity. CVSS v3 base score is 9.9 out of 10.

Buffer overflow in D-Link Dir-825m

CVE-2026-82593

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.

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

D-link Dir-825m — versions 1.1.8

Weakness classification (CWE)

References

cna@vuldb.com (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (exploit, patch)
cna@vuldb.com (product)

Frequently asked questions

What is CVE-2026-82593?: CVE-2026-82593 is a critical-severity vulnerability in D-Link Dir-825m, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.9/10. Published 2026-08-31.
How severe is CVE-2026-82593?: Critical severity. CVSS v3 base score is 9.9 out of 10.