Which versions of D-Link DIR-825M are affected by CVE-2026-7289?

D-Link DIR-825M routers running firmware 1.1.12 are vulnerable to authenticated remote code execution through a buffer overflow in the WAN configuration endpoint, allowing attackers who gain network…

How to fix or mitigate CVE-2026-7289?

Within 24 hours: Inventory all D-Link DIR-825M routers in production and document firmware versions; restrict network access to the affected devices to trusted administrative sources only via firewall rules. Within 7 days: Disable remote management interfaces if not operationally required; audit authentication logs for unauthorized access attempts to the /boafrm/formWanConfigSetup endpoint; change all default and administrative credentials on affected devices. Within 30 days: Contact D-Link support for patch availability and estimated timeline; evaluate replacement with devices receiving active security updates; implement network segmentation to isolate router management traffic from user networks.

D-Link DIR-825M CVE-2026-7289

Q: What is the CVSS score of CVE-2026-7289?

CVE-2026-7289 has a CVSS 4.0 base score of 7.4 (High). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.0%.

EUVD-2026-26068 HIGH

Buffer Overflow (CWE-119)

2026-04-28 cna@vuldb.com

Buffer Overflow D-Link

7.4

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

7.4 HIGH

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Lifecycle Timeline

Re-analysis Queued

Apr 28, 2026 - 20:38 vuln.today

cvss_changed

Analysis Generated

Apr 28, 2026 - 15:31 vuln.today

EUVD ID Assigned

Apr 28, 2026 - 15:22 euvd

EUVD-2026-26068

Analysis Generated

Apr 28, 2026 - 15:22 vuln.today

CVE Published

Apr 28, 2026 - 15:16 nvd

HIGH 7.4

DescriptionCVE.org

A vulnerability was found in D-Link DIR-825M 1.1.12. This issue affects the function sub_414BA8 of the file /boafrm/formWanConfigSetup. The manipulation of the argument submit-url results in buffer overflow. The attack can be executed remotely. The exploit has been made public and could be used.

AnalysisAI

Remote authenticated attackers can execute arbitrary code on D-Link DIR-825M routers (firmware 1.1.12) by sending specially crafted requests to the /boafrm/formWanConfigSetup endpoint with malicious submit-url parameters, triggering a buffer overflow in function sub_414BA8. Public proof-of-concept exploit code exists on GitHub (Kiciot/cve#3), significantly lowering exploitation barriers. While requiring authentication (PR:L), the network attack vector (AV:N) and low complexity (AC:L) enable remote compromise of affected devices with potential for complete device control (VC:H/VI:H/VA:H). No CISA KEV listing or EPSS data available at time of analysis.

Technical ContextAI

This vulnerability stems from improper buffer size validation (CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer) in the router's web management interface. The affected function sub_414BA8 processes WAN configuration requests without adequately validating the length of the submit-url parameter before copying it into a fixed-size buffer. D-Link DIR-825M is a dual-band wireless AC router with integrated web-based administration. The vulnerable endpoint /boafrm/formWanConfigSetup handles configuration of WAN network settings. Stack-based or heap-based buffer overflows in embedded device firmware frequently allow attackers to overwrite return addresses or function pointers, redirecting program execution to attacker-controlled code. The CVSS 4.0 vector indicates no impact to subsequent system components (SC:N/SI:N/SA:N), suggesting exploitation is contained to the router itself rather than enabling pivot to connected network devices.

RemediationAI

Check for firmware updates from D-Link support (https://www.dlink.com/support) and upgrade to the latest available firmware version for DIR-825M if a patched release addressing this buffer overflow has been published. No specific fix version number is confirmed in available data-contact D-Link directly or monitor VulDB entry 359947 (https://vuldb.com/vuln/359947) for patch announcements. Until patching, implement these compensating controls: (1) Disable remote (WAN-side) administrative access to the router web interface, restricting management to LAN-only connections-this prevents internet-based exploitation but allows local network attackers to proceed if they gain internal access; (2) Change default administrative credentials to strong, unique passwords to raise the authentication barrier (PR:L requirement); (3) Segment the router on an isolated management VLAN if enterprise deployment allows, limiting blast radius; (4) Monitor router logs for repeated failed authentication attempts or unexpected configuration changes. If D-Link discontinues support for DIR-825M (common for older consumer hardware), consider replacement with actively supported hardware as compensating controls only reduce rather than eliminate risk from memory corruption vulnerabilities.