VDB-351087 · CVE-2026-4183 · EUVD-2026-12238

D-Link DIR-816 1.10CNB05 goahead form2WlanBasicSetup.cgi pskValue stack-based overflow

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
9.4	$0-$5k	0.23

Summaryinfo

A vulnerability identified as critical has been detected in D-Link DIR-816 1.10CNB05. Affected by this vulnerability is an unknown functionality of the file /goform/form2WlanBasicSetup.cgi of the component goahead. Performing a manipulation of the argument pskValue results in stack-based overflow. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability is reported as CVE-2026-4183. The attack is possible to be carried out remotely. Moreover, an exploit is present.

Detailsinfo

A vulnerability was found in D-Link DIR-816 1.10CNB05. It has been classified as critical. This affects some unknown functionality of the file /goform/form2WlanBasicSetup.cgi of the component goahead. The manipulation of the argument pskValue with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on confidentiality, integrity, and availability.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-4183. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/21/2026).

The exploit is shared for download at github.com. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-12238). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Router Operating System

Vendor

D-Link

Name

DIR-816

Version

1.10CNB05

License

commercial

Support

end of life

Website

Vendor: https://www.dlink.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.4

VulDB Base Score: 9.8
VulDB Temp Score: 8.9
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 9.8
CNA Vector: 🔒

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

03/14/2026 Advisory disclosed
03/14/2026 +0 days VulDB entry created
03/21/2026 +7 days VulDB entry last update

Sourcesinfo

Vendor: dlink.com

Advisory: github.com
Status: Not defined

CVE: CVE-2026-4183 (🔒)
GCVE (CVE): GCVE-0-2026-4183
GCVE (VulDB): GCVE-100-351087
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/14/2026 23:02
Updated: 03/21/2026 09:43
Changes: 03/14/2026 23:02 (58), 03/15/2026 19:09 (1), 03/21/2026 09:43 (32)
Complete: 🔍
Submitter: pjqwudi
Cache ID: 216:8B3:103

Submitinfo

Accepted

Submit #769831: D-Link DIR816 1.10CNB05 Stack-based Buffer Overflow (by pjqwudi)