Cyber Resilience

CVE-2022-25082

CriticalPublic PoCRCE

Published: 24 February 2022

Published
24 February 2022
Modified
21 November 2024
KEV Added
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Patch
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CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.8957 99.6th percentile
Risk Priority 73 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2022-25082 is a critical-severity OS Command Injection (CWE-78) vulnerability in Totolink A950Rg Firmware. Its CVSS base score is 9.8 (Critical).

Operationally, ranked in the top 0.4% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

Deeper analysis

TOTOLink A950RG routers running firmware versions V5.9c.4050_B20190424 and V4.1.2cu.5204_B20210112 contain a command injection vulnerability in the Main function. The flaw, tracked as CVE-2022-25082 and assigned CWE-78, permits arbitrary command execution when unsanitized input is processed through the QUERY_STRING parameter. It received a CVSS 3.1 base score of 9.8 reflecting network-accessible, unauthenticated attack conditions with high impact on confidentiality, integrity, and availability.

An unauthenticated remote attacker can supply a malicious QUERY_STRING value to the affected web interface and execute operating-system commands with the privileges of the web server process. Successful exploitation grants complete device compromise, enabling actions such as configuration changes, traffic interception, or persistence mechanisms without any user interaction.

Public references consist of technical write-ups hosted on GitHub that reproduce the injection but contain no vendor advisory, patch information, or mitigation guidance. The vulnerability’s EPSS score remains elevated, with a recorded peak of 0.9489 and a current value of 0.8957.

EU & UK References

Vulnerability details

TOTOLink A950RG V5.9c.4050_B20190424 and V4.1.2cu.5204_B20210112 were discovered to contain a command injection vulnerability in the "Main" function. This vulnerability allows attackers to execute arbitrary commands via the QUERY_STRING parameter.

CWE(s)
CWE-78

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

totolink
a950rg firmware
4.1.2cu.5204_b20210112, 5.9c.4050_b20190424

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.

SC-27 Platform-independent Applications
addresses: CWE-78

Platform-independent apps typically execute inside a managed runtime or sandbox that restricts direct OS command execution, reducing the ability to exploit OS command injection.

SI-10 Information Input Validation
addresses: CWE-78

Validates inputs to block special elements that would alter OS command execution.

References