Dlink: >> Dir-816 >> a2 Security Vulnerabilities
A stack buffer overflow vulnerability exists in the D-Link DIR-816A2 router firmware DIR-816A2_FWv1.10CNB05_R1B011D88210.img in the upload.cgi module, which handles firmware version information. The vulnerability occurs because /proc/version is read into a 512-byte buffer and then concatenated using sprintf() into another 512-byte buffer containing a 29-byte constant. Input exceeding 481 bytes triggers a stack buffer overflow, allowing an attacker who can control /proc/version content to potentially execute arbitrary code on the device.
CVSS Score
8.8
EPSS Score
0.001
Published
2025-11-13
D-Link DIR-816A2_FWv1.10CNB05 was discovered to contain a stack overflow via the statuscheckpppoeuser parameter in the dir_setWanWifi function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input.
CVSS Score
7.5
EPSS Score
0.0
Published
2025-10-09
An issue D-Link DIR-816-A2 DIR-816A2_FWv1.10CNB05_R1B011D88210 allows a remote attacker to execute arbitrary code via system() function in the bin/goahead file
CVSS Score
9.8
EPSS Score
0.008
Published
2025-06-30
D-Link DIR-816 A2V1.1.0B05 was found to contain a command injection in /goform/delRouting.
CVSS Score
6.5
EPSS Score
0.038
Published
2025-04-22
An access control issue in the component form2Wan.cgi of D-Link 816A2_FWv1.10CNB05_R1B011D88210 allows unauthenticated attackers to set the wan service of the device via a crafted POST request.
CVSS Score
6.5
EPSS Score
0.002
Published
2025-01-16
An access control issue in the component form2WlAc.cgi of D-Link 816A2_FWv1.10CNB05_R1B011D88210 allows unauthenticated attackers to set the 2.4G and 5G mac access control list of the device via a crafted POST request.
CVSS Score
6.5
EPSS Score
0.002
Published
2025-01-16
An access control issue in the component form2RepeaterSetup.cgi of D-Link 816A2_FWv1.10CNB05_R1B011D88210 allows unauthenticated attackers to set the 2.4G and 5G repeater service of the device via a crafted POST request.
CVSS Score
6.5
EPSS Score
0.001
Published
2025-01-16
An access control issue in the component form2PortriggerRule.cgi of D-Link 816A2_FWv1.10CNB05_R1B011D88210 allows unauthenticated attackers to set the port trigger of the device via a crafted POST request.
CVSS Score
5.3
EPSS Score
0.001
Published
2025-01-16
An access control issue in the component form2alg.cgi of D-Link 816A2_FWv1.10CNB05_R1B011D88210 allows unauthenticated attackers to set the agl service of the device via a crafted POST request.
CVSS Score
5.3
EPSS Score
0.001
Published
2025-01-16
An information disclosure vulnerability in the component d_status.asp of D-Link 816A2_FWv1.10CNB05_R1B011D88210 allows unauthenticated attackers to access sensitive information via a crafted POST request.
CVSS Score
6.5
EPSS Score
0.001
Published
2025-01-16
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