Cyber Resilience

CVE-2025-3987

MediumPublic PoC

Published: 27 April 2025

Published
27 April 2025
Modified
07 May 2025
KEV Added
—
Patch
—
CVSS Score v4 5.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.1192 93.9th percentile
Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-3987 is a medium-severity Injection (CWE-74) vulnerability in Totolink N150Rt Firmware. Its CVSS base score is 5.3 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 6.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

Deeper analysis

CVE-2025-3987 is a command injection vulnerability in the TOTOLINK N150RT wireless router running firmware version 3.4.0-B20190525. The flaw resides in the processing of the /boafrm/formWsc endpoint, where unsanitized input to the localPin argument allows arbitrary command execution. It is tracked under CWE-74 and CWE-77 and carries a CVSS 4.0 score of 5.3.

An authenticated remote attacker can supply a crafted localPin value to the affected form handler and execute operating-system commands on the device. The attack requires no user interaction and can be launched over the network, resulting in limited but direct effects on confidentiality, integrity, and availability of the router.

Public references include a detailed proof-of-concept on GitHub and entries on VulDB, confirming that exploit code has been disclosed. No vendor advisory or patch information is provided in the available sources, and the EPSS score has remained flat at 0.1192 with no observed increase after publication.

EU & UK References

Vulnerability details

A vulnerability was found in TOTOLINK N150RT 3.4.0-B20190525. It has been rated as critical. This issue affects some unknown processing of the file /boafrm/formWsc. The manipulation of the argument localPin leads to command injection. The attack may be initiated remotely.…

more

The exploit has been disclosed to the public and may be used.

CWE(s)
CWE-74CWE-77

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1202 Indirect Command Execution Stealth
Adversaries may abuse utilities that allow for command execution to bypass security restrictions that limit the use of command-line interpreters.
attack.mitre.org →
T1059.008 Network Device CLI Execution
Adversaries may abuse scripting or built-in command line interpreters (CLI) on network devices to execute malicious command and payloads.
attack.mitre.org →
Why these techniques?

The remote command injection vulnerability in the TOTOLINK N150RT router's web interface (/boafrm/formWsc) via the localPin parameter enables exploitation of a public-facing application (T1190), indirect command execution (T1202 as cited in advisory), and command/script execution on a network device CLI equivalent (T1059.008).

Affected Assets

totolink
n150rt firmware
3.4.0-b20190525

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SA-11 Developer Testing and Evaluation
addresses: CWE-74

Developer assessments and testing (including injection-focused techniques) identify improper neutralization of special elements, and the verifiable flaw remediation corrects them pre-deployment.

SI-4 System Monitoring
addresses: CWE-74

Identifies indicators of injection attacks (command, SQL, LDAP, etc.) via anomaly and attack monitoring.

References