CVE-2026-8345

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.

Overview

State: PUBLISHED
Assigner (CNA): VulDB
CVSS severity: MEDIUM
CVSS score: 5.3 / 10
CVSS 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
Effective score: 5.3 / 10 MEDIUM source: CNA overview
CWE(s): CWE-77, CWE-74
Reserved: 2026-05-11
Published: 2026-05-12 00:00 UTC
Last updated: 2026-05-12 15:20 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/8xxx/CVE-2026-8345.json
Linked Threat: CVE-2026-8345 — CVE-2026-8345

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published: 2026-05-11 23:20:22 UTC
NVD last modified: 2026-05-12 19:55:38 UTC
NVD CVSS v3.1: 6.3 / 10 MEDIUM source: cna@vuldb.com
NVD CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Exploitability subscore: 2.8 / 10
Impact subscore: 3.4 / 10
EPSS score: 0.0009 (probability of exploitation in next 30 days)
EPSS percentile: 25.16% vs all CVEs — higher = more likely to be exploited, as of 2026-05-24

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-29346
Assigner: VulDB
Published: May 11, 2026, 10:00:14 PM
Updated: May 12, 2026, 1:20:15 PM
EUVD base score (CVSS 4.0): 5.3 / 10
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
EUVD-reported EPSS: 3.1600
Vendors: D-Link
Products: DIR-816 (1.10CNB05_R1B011D88210)

ENISA 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.

EUVD references (5)

Affected products (1)

Vendor	Product	Versions	Platforms
D-Link	DIR-816	`1.10CNB05_R1B011D88210` (affected)	—

Affected products — CPE 2.3 (2) NVD

NVD's normalized CPE 2.3 matchers, used by vendor tools (vulnerability scanners, asset managers) for automated detection. Compare with the CNA's free-text "Affected products" section above.

cpe:2.3:o:dlink:dir-816_firmware:1.10cnb05_r1b011d88210:*:*:*:*:*:*:*
cpe:2.3:h:dlink:dir-816:a2:*:*:*:*:*:*:*

Vendor references (5)

References embedded in the original CVE record by the assigning CNA.

VDB-362661 | D-Link DIR-816 singlePortForward sub_445E7C command injection vdb-entrytechnical-description
VDB-362661 | CTI Indicators (IOB, IOC, TTP, IOA) signaturepermissions-required
Submit #811379 | D-Link DIR816 DIR-816A2_FWv1.10CNB05_R1B011D88210.img Command Injection third-party-advisory
https://github.com/lipenghai/iot_bug/blob/main/D-Link/DIR816/2.md exploit
https://www.dlink.com/ product

MITRE references (5) cveawg.mitre.org

Pulled from MITRE's CVE Services API by the 🛰 Backfill from MITRE button.

https://github.com/lipenghai/iot_bug/blob/main/D-Link/DIR816/2.md exploit
https://www.dlink.com/ product
VDB-362661 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
Submit #811379 | D-Link DIR816 DIR-816A2_FWv1.10CNB05_R1B011D88210.img Command Injection third-party-advisory
VDB-362661 | D-Link DIR-816 singlePortForward sub_445E7C command injection vdb-entry, technical-description

Web references (3)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

https://www.cve.org/CVERecord?id=CVE-2026-8345 tenable:www.cve.org
https://nvd.nist.gov/vuln/detail/CVE-2026-8345 tenable:nvd.nist.gov
https://www.first.org/epss/ tenable:www.first.org

NVD-tagged references (5)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

https://github.com/lipenghai/iot_bug/blob/main/D-Link/DIR816/2.md cna@vuldb.com ExploitThird Party Advisory
https://vuldb.com/submit/811379 cna@vuldb.com Third Party AdvisoryVDB Entry
https://vuldb.com/vuln/362661 cna@vuldb.com Third Party AdvisoryVDB Entry
https://vuldb.com/vuln/362661/cti cna@vuldb.com Permissions RequiredVDB Entry
https://www.dlink.com/ cna@vuldb.com Product

Remediations (16)

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

Critical NGINX RCE vulnerability CVE-2026-42945

web:community.broadcom.com

A critical security issue, dubbed NGINX Rift and identified as CVE - 2026 -42945, has been disclosed. This vulnerability affects both NGINX Open Source and NGINX Plus. We are publishing this post to provide immediate guidance and confirm the rapid release of patched images for all affected Bitnami customers. Understanding the Critical Flaw: NGINX Rift ( CVE - 2026 -42945) The NGINX Rift vulnerability ...

2026-05-23 20:59 UTC
Microsoft Patch Tuesday March 2026 - 78 Vulnerabilities Fixed ...

web:cybersecuritynews.com

Microsoft released its March 2026 Patch Tuesday security update on March 10, 2026 , addressing 78 vulnerabilities across Windows, Microsoft Office, Azure, SQL Server, and .NET. The update includes one actively exploited zero-day vulnerability and multiple Critical-rated flaws demanding immediate attention from security teams. The most urgent fix this month is CVE - 2026 -21262, the sole zero-day ...

2026-05-23 20:59 UTC
Six Patch Management Best Practices [Updated 2026]

web:heimdalsecurity.com

Explore six essential patch management best practices for 2026 to keep your systems secure, up to date, and protected from vulnerabilities.

2026-05-23 20:59 UTC
NGINX CVE-2026-42945 RCE vulnerability: what hosters need to know

web:hostcay.com

A critical vulnerability in NGINX has moved from theoretical to operational threat within days of disclosure. CVE - 2026 -42945, a heap buffer overflow in the rewrite module, carries a CVSS score of 9.2 and is being actively weaponised in the wild. For operators running NGINX at scale—particularly those managing shared hosting, VPS platforms, or dedicated server infrastructure—this represents ...

2026-05-23 20:59 UTC
NGINX Rewrite Module Flaw (CVE-2026-42945) | Orca Security

web:orca.security

A critical vulnerability ( CVE - 2026 -42945, CVSS 9.2) was disclosed affecting NGINX Open Source and NGINX Plus, allowing attackers to reliably trigger denial-of-service (DoS) conditions and potentially achieve remote code execution (RCE) via specially crafted HTTP requests. Due to the potential for widespread disruption across internet-facing applications and ingress infrastructure, immediate ...

2026-05-23 20:59 UTC
Security Update Guide - Microsoft

web:portal.msrc.microsoft.com

The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.

2026-05-23 20:59 UTC
Critical 18-Year-Old NGINX RCE (CVE-2026-42945) and GitHub PoC Disclosed

web:securityonline.info

Public PoC for NGINX CVE - 2026 -42945. An 18-year-old RCE flaw in the rewrite module enables server takeover. Update to NGINX 1.31.0 or 1.30.1 immediately.

2026-05-23 20:59 UTC
April 2026 Patch Tuesday: Updates and Analysis | CrowdStrike

web:www.crowdstrike.com

Microsoft's April 2026 Patch Tuesday addresses 164 CVEs , featuring 8 Critical vulnerabilities, one exploited zero-day, and one disclosed zero-day.

2026-05-23 20:59 UTC
Oracle Critical Patch Update Advisory - April 2026

web:www.oracle.com

This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.

2026-05-23 20:59 UTC
Patch Tuesday May 2026: Security Updates & CVE Analysis

web:zecurit.com

Get the complete breakdown of Microsoft's May 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .

2026-05-23 20:59 UTC
Windows Kerberos RC4 deprecation: what will break in Active ... - 4sysops

web:4sysops.com

Starting in April 2026 , Windows updates will change the default Kerberos ticket issuance behavior to AES-SHA1 for accounts without explicit encryption settings, while RC4 can still be used where explicitly enabled. This change, driven by CVE - 2026 -20833, affects every Windows Server environment where service accounts or devices still rely on RC4. Any service account, NAS device, or legacy ...

2026-05-26 02:53 UTC
Security Advisory Bulletin 064 | Ubiquiti Community

web:community.ui.com

Published: May 21, 2026 Updated: May 22, 2026 Version: 1.1 Revision: 1.1 Summary 1 of 5 A malicious actor with access to the network and high privileges could exploit an Improper Input Validation vulnerability found in UniFi OS devices to execute a Command Injection. Affected Products: UniFi OS Server (Version 5.0.6 and earlier) Mitigation : Update your UniFi OS Server to Version 5.0.8 or later ...

2026-05-26 02:53 UTC
Security Update Guide - Microsoft

web:msrc.microsoft.com

The Microsoft Security Response Center (MSRC) investigates all reports of security vulnerabilities affecting Microsoft products and services, and provides the information here as part of the ongoing effort to help you manage security risks and help keep your systems protected.

2026-05-26 02:53 UTC
Microsoft KB Catalog: Updates, Issues, & Feedback - NinjaOne

web:www.ninjaone.com

Catalog of Microsoft KB updates with insights on performance & user sentiment. Find out what's working, what's not, & make informed decisions.

2026-05-26 02:53 UTC
Microsoft fixes 167 security flaws in April, second biggest Patch ...

web:www.pcworld.com

This month's Patch Tuesday includes an actively exploited Office zero-day vulnerability and several critical RCE bugs in Windows and Remote Desktop.

2026-05-26 02:53 UTC
Microsoft Issues Massive Windows Patch for 160+ Bugs ... - TechRepublic

web:www.techrepublic.com

Microsoft's April 2026 Patch Tuesday fixes 165 vulnerabilities, including two zero-days, in one of the company's largest monthly security updates.

2026-05-26 02:53 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-8345.json.

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