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CVE-2026-82593— D-Link DIR-825M LTE Module Firmware Upgrade formLtefotaUpgradeFibocom sub_41802C stack-based overflow

Quick assessment

Affected
D-Link DIR-825M
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

D-Link DIR-825M是中国D-Link公司的一款路由器。 D-Link DIR-825M 1.1.8版本存在缓冲区错误漏洞，该漏洞源于对文件/boafrm/formLtefotaUpgradeFibocom中参数fota_url的操作，导致栈缓冲区溢出，可能允许远程攻击者执行任意代码。

CVSS 9.9 · Critical EPSS 0.91% · P60

Affected Version Matrix 1

VendorProduct Version RangeStatus
D-Link DIR-825M 1.1.8 affected
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I. Basic Information for CVE-2026-82593

Vulnerability Information
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Vulnerability Title
D-Link DIR-825M LTE Module Firmware Upgrade formLtefotaUpgradeFibocom sub_41802C stack-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
D-Link DIR-825M 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
D-Link DIR-825M是中国D-Link公司的一款路由器。 D-Link DIR-825M 1.1.8版本存在缓冲区错误漏洞，该漏洞源于对文件/boafrm/formLtefotaUpgradeFibocom中参数fota_url的操作，导致栈缓冲区溢出，可能允许远程攻击者执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
D-Link DIR-825M 1.1.8 cpe:2.3:h:d-link:dir-825m:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-82593

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III. Intelligence Information for CVE-2026-82593

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Vendor Advisories for CVE-2026-82593 (2)

Proof of Concept for CVE-2026-82593 (1)

Vendor Pages for CVE-2026-82593 (1)

Other References for CVE-2026-82593 (1)

Same Patch Batch · D-Link · 2026-08-30 · 3 CVEs total

CVE-2026-82592 9.9 CRITICAL D-Link DIR-825M Disk Formatting Handler Endpoint formDiskFormat sub_46725C stack-based ove
CVE-2026-82595 7.4 HIGH D-Link DIR-825M System Command Execution formSysCmd sub_456CF4 command injection

IV. Related Vulnerabilities

Same product: DIR-825M
Same vendor: D-Link
Same weakness: CWE-121

V. Comments for CVE-2026-82593

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