CVE-2025-25743
RCE in Dlink Dir-853 Firmware 1.20b07
Raw vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2025-25743 is a high-severity Command Injection (CWE-77) vulnerability in Dlink Dir-853 Firmware. Its CVSS base score is 7.2 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Command and Scripting Interpreter (T1059); ranked in the top 25% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SI-10 (Information Input Validation) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
D-Link DIR-853 A1 firmware version FW1.20B07 contains a command injection vulnerability in the SetVirtualServerSettings module, tracked as CVE-2025-25743. The flaw is classified under CWE-77 and carries a CVSS 3.1 score of 7.2, reflecting network-reachable exploitation that requires high privileges but no user interaction.
An authenticated administrator can supply crafted input to the affected module over the network, resulting in arbitrary command execution on the device with full impact to confidentiality, integrity, and availability. This allows an attacker who already possesses administrative credentials to take complete control of the router.
EPSS for the CVE rose from a low baseline after the February 2025 disclosure to a peak of 0.1089 on 2025-12-11 before receding to the current value of 0.0416, indicating a period of increased exploitation interest several months after publication. The single public reference is a technical disclosure note hosted on Notion that does not detail vendor patches or mitigation steps.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-4132
Vulnerability Data
D-Link DIR-853 A1 FW1.20B07 was discovered to contain a command injection vulnerability in the SetVirtualServerSettings module.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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V1.2.3V1.2.5V1.2.8V1.2.9
Mitigating Controls (NIST 800-53 r5) AI
Developer testing and evaluation can discover command-construction flaws before deployment.
Input validation directly stops construction of commands from untrusted data containing special elements.
Secure engineering principles include proper neutralization and safe command construction practices.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Secure SDLC practices directly require input validation and neutralization that prevent command injection.
Runtime monitoring of software and data can detect anomalous command execution resulting from injection.
Identifying recorded vulnerabilities enables remediation of command-injection flaws before exploitation.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Secure coding standards require proper escaping and parameterization of commands, directly eliminating CWE-77.
Security testing in development catches command-injection vulnerabilities before release.
Secure development life cycle mandates input validation and command construction practices that directly prevent command injection.
Application security requirements explicitly call for controls against injection flaws including command injection.
Secure architecture principles reduce the attack surface but do not prescribe the specific neutralization techniques needed.