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Vulnerability record · CVE-2023-44839 · published 5 October 2023

CVE-2023-44839: Dlink dir-823g firmware classic buffer overflow vulnerability

Dlink · Dir 823g Firmware

D-Link DIR-823G A1V1.0.2B05 was discovered to contain a buffer overflow via the Encryption parameter in the SetWLanRadioSecurity function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.

7.5 CVSS 3.1 High EPSS 8.1% · top 5.3% CWE-120 · Classic buffer overflow
7.5CVSS 3.1 base score
8.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

D-Link DIR-823G A1V1.0.2B05 was discovered to contain a buffer overflow via the Encryption parameter in the SetWLanRadioSecurity function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/bugfinder0/public_bug/tree/main/dlink/dir823g/SetWLanRadioSecurity_Encryption ExploitThird Party Advisory
https://www.dlink.com/en/security-bulletin/ Vendor Advisory
https://github.com/bugfinder0/public_bug/tree/main/dlink/dir823g/SetWLanRadioSecurity_Encryption ExploitThird Party Advisory
https://www.dlink.com/en/security-bulletin/ Vendor Advisory

Track CVE-2023-44839 inside VULONE

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2023-43241Dlink dir-823g firmware out-of-bounds write vulnerabilityD-Link DIR-823G v1.0.2B05 was discovered to contain a stack overflow via parameter TXPower and GuardInt in SetWLanRadioSecurity.EPSS 1.3%9.8CVE-2023-43235Dlink dir-823g firmware out-of-bounds write vulnerabilityD-Link DIR-823G v1.0.2B05 was discovered to contain a stack overflow via parameter StartTime and EndTime in SetWifiDownSettings.EPSS 1.3%9.8CVE-2023-26612Dlink dir-823g firmware classic buffer overflow vulnerabilityD-Link DIR-823G firmware version 1.02B05 has a buffer overflow vulnerability, which originates from the HostName field in SetParentsControlInfo.EPSS 1.3%9.8CVE-2023-26613Dlink dir-823g firmware os command injection vulnerabilityAn OS command injection vulnerability in D-Link DIR-823G firmware version 1.02B05 allows unauthorized attackers to execute arbitrary operating system…EPSS 31%9.8CVE-2023-26616Dlink dir-823g firmware classic buffer overflow vulnerabilityD-Link DIR-823G firmware version 1.02B05 has a buffer overflow vulnerability, which originates from the URL field in SetParentsControlInfo.EPSS 1.3%9.8CVE-2023-29665Dlink dir-823g firmware out-of-bounds write vulnerabilityD-Link DIR823G_V1.0.2B05 was discovered to contain a stack overflow via the NewPassword parameters in SetPasswdSettings.EPSS 1.2%9.8CVE-2022-44808Dlink dir-823g firmware os command injection vulnerabilityA command injection vulnerability has been found on D-Link DIR-823G devices with firmware version 1.02B03 that allows an attacker to execute arbitrar…EPSS 3.8%9.8CVE-2022-44201Dlink dir-823g firmware os command injection vulnerabilityD-Link DIR823G 1.02B05 is vulnerable to Commad Injection.EPSS 1.3%

Source: NIST National Vulnerability Database (record CVE-2023-44839), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.