Dir 816 A2 Firmware
CVE-2025-44835
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Command injection prevention
MITRE ATT&CK
1 technique across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 6.3 (MEDIUM). Attack characteristics: network attack vector, low complexity, low privileges required, no user interaction not required. Public proof-of-concept exploit code is available. EPSS exploitation probability: 6.38%. |
| Exploit ScenarioDerived | A remote attacker could inject arbitrary commands into system command execution by sending crafted requests to the affected application. |
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Alert meAnalysisAIv1 – Mar 28, 2026
D-Link DIR-816 A2V1.1.0B05 was found to contain a command injection in iptablesWebsFilterRun, which allows remote attackers to execute arbitrary commands via shell. Rated medium severity (CVSS 6.3), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use parameterized APIs, avoid shell execution, validate input with strict allowlists.
Affects your stack
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Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Command Injection (CWE-77), which allows attackers to inject arbitrary commands into system command execution. D-Link DIR-816 A2V1.1.0B05 was found to contain a command injection in iptablesWebsFilterRun, which allows remote attackers to execute arbitrary commands via shell. Affected products include: Dlink Dir-816 A2 Firmware.
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Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
2DescriptionCVE.org
D-Link DIR-816 A2V1.1.0B05 was found to contain a command injection in iptablesWebsFilterRun, which allows remote attackers to execute arbitrary commands via shell.
Executive ViewAI
Organizations using D-Link DIR-816 A2V1.1.0B05 should be aware of moderate risk from CVE-2025-44835, a command injection vulnerability rated CVSS 6.3. Exploitation could allow attackers to execute code or inject malicious input. Proof-of-concept code is publicly available. Organizations should apply vendor updates when available and monitor for exploitation.
Apply vendor patch. If patching is delayed: deploy WAF rules, restrict network access, enable logging.
Threat Intelligence Overview
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
OS command injection occurs when an application passes unsanitized user input directly into system shell commands.
Affected Products (CPE)CVE.org
More in Dir 816 A2 Firmware
View allA vulnerability has been found in D-Link DIR-816 A2 1.10CNB04 and classified as critical. Rated critical severity (CVSS
D-Link DIR-816 A2 v1.10CNB05 was discovered to contain a stack overflow via parameter sip_address in ipportFilter. Rated
D-Link DIR-816 A2 v1.10CNB05 was discovered to contain a stack overflow via parameter flag_5G in showMACfilterMAC. Rated
D-Link DIR-816 A2 v1.10CNB05 was discovered to contain a stack overflow via parameter nvmacaddr in form2Dhcpip.cgi. Rate
D-Link DIR-816 A2 v1.10CNB05 was discovered to contain a stack overflow via parameter macCloneMac in setMAC. Rated criti
D-Link DIR-816 A2 v1.10CNB05 was discovered to contain a stack overflow via parameter statuscheckpppoeuser in dir_setWan
D-Link DIR-816 A2 1.10 B05 devices allow arbitrary remote code execution without authentication via the newpass paramete
An issue was discovered on D-Link DIR-816 A2 1.10 B05 devices. Rated critical severity (CVSS 9.8), this vulnerability is
An issue was discovered on D-Link DIR-816 A2 1.10 B05 devices. Rated critical severity (CVSS 9.8), this vulnerability is
An issue was discovered on D-Link DIR-816 A2 1.10 B05 devices. Rated critical severity (CVSS 9.8), this vulnerability is
An issue was discovered on D-Link DIR-816 A2 1.10 B05 devices. Rated critical severity (CVSS 9.8), this vulnerability is
An issue was discovered on D-Link DIR-816 A2 1.10 B05 devices. Rated critical severity (CVSS 9.8), this vulnerability is
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