CVE-2026-8345 - Vulnerability Details

- D-Link DIR-816 singlePortForward sub_445E7C command injection

Description

A security vulnerability has been detected in D-Link DIR-816 1.10CNB05_R1B011D88210. Affected by this issue is the function sub_445E7C of the file /goform/singlePortForward. Such manipulation of the argument ip_address leads to command injection. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used.

Published: 2026-05-11

Score: 5.3 Medium

EPSS: 5.0% Low

KEV: No

Impact:

Action:

Analysis

Impact

The flaw is a command injection in the /goform/singlePortForward endpoint of the D‑Link DIR‑816 router firmware. By supplying a crafted ip_address value, an attacker can cause the device to execute arbitrary operating‑system commands through the web interface, potentially enabling remote compromise of the router.

Affected Systems

Vendor: D‑Link. Product: DIR‑816. Firmware: 1.10CNB05_R1B011D88210 is affected. No other versions are listed.

Risk and Exploitability

The CVSS score of 5.3 indicates moderate severity, and the EPSS score of 5% signifies a low probability of exploitation. The vulnerability is not in the CISA KEV catalog. Based on the description, it is inferred that the attack may require management console access, but it could also be available to unauthenticated users if the interface is exposed.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

D-Link

DIR-816

affected

Version	Status	Constraints
`1.10CNB05_R1B011D88210`	affected	—

Configuration 1 [-]

AND

cpe:2.3:o:dlink:dir-816_firmware:1.10cnb05_r1b011d88210:*:*:*:*:*:*:*

cpe:2.3:h:dlink:dir-816:a2:*:*:*:*:*:*:*

No data.

Vendor Product Confidence Versions

D-link

Dir-816

100%

Version	Status	Scheme	Platform
`1.10CNB05_R1B011D88210`	affected	generic	—

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Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

Update the router firmware to a version that resolves the command‑injection issue.
If no update is available, disable the singlePortForward feature or block access to /goform/singlePortForward through the router's firewall or access control lists.
Restrict management access to the router’s internal network or enforce strong authentication to limit exposure.

Generated by OpenCVE AI on September 26, 2026 at 08:41 UTC.

Tracking

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Advisories

No advisories yet.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.0497.

Exploitation poc

Automatable no

Technical Impact partial

References

Link	Providers
https://github.com/lipenghai/iot_bug/blob/main/D-Link/DIR816/2.md
https://vuldb.com/submit/811379
https://vuldb.com/vuln/362661
https://vuldb.com/vuln/362661/cti
https://www.dlink.com/

History

Tue, 12 May 2026 20:00:00 +0000

Type	Values Removed	Values Added
First Time appeared		Dlink Dlink dir-816 Dlink dir-816 Firmware
CPEs		cpe:2.3:h:dlink:dir-816:a2:::::::* cpe:2.3:o:dlink:dir-816_firmware:1.10cnb05_r1b011d88210:::::::*
Vendors & Products		Dlink Dlink dir-816 Dlink dir-816 Firmware

Tue, 12 May 2026 14:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Tue, 12 May 2026 00:00:00 +0000

Type	Values Removed	Values Added
First Time appeared		D-link D-link dir-816
Vendors & Products		D-link D-link dir-816

Mon, 11 May 2026 22:30:00 +0000

Type	Values Removed	Values Added
Description		A security vulnerability has been detected in D-Link DIR-816 1.10CNB05_R1B011D88210. Affected by this issue is the function sub_445E7C of the file /goform/singlePortForward. Such manipulation of the argument ip_address leads to command injection. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used.
Title		D-Link DIR-816 singlePortForward sub_445E7C command injection
Weaknesses		CWE-74 CWE-77
References		https://github.com/lipenghai/iot_bug/blob/main/D-Link/DIR816/2.md https://vuldb.com/submit/811379 https://vuldb.com/vuln/362661 https://vuldb.com/vuln/362661/cti https://www.dlink.com/
Metrics		cvssV2_0 `{'score': 6.5, 'vector': 'AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR'}` cvssV3_0 `{'score': 6.3, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R'}` cvssV3_1 `{'score': 6.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R'}` cvssV4_0 `{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P'}`

Subscriptions

D-link Dir-816

Dlink Dir-816 Dir-816 Firmware

MITRE

Status: PUBLISHED

Assigner: VulDB

Published: 2026-05-11T22:00:14.970Z

Updated: 2026-05-12T13:20:15.688Z

Reserved: 2026-05-11T16:24:21.287Z

Link: CVE-2026-8345

Vulnrichment

Updated: 2026-05-12T13:20:11.434Z

NVD

Status : Analyzed

Published: 2026-05-11T23:20:22.813

Modified: 2026-06-17T11:03:49.633

Link: CVE-2026-8345

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-09-26T08:45:04Z

Weaknesses

CWE-74
Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-77
Improper Neutralization of Special Elements used in a Command ('Command Injection')

Impact

Affected Systems

Risk and Exploitability

Tracking

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

Exploitation poc

Automatable no

Technical Impact partial

Subscriptions

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