Cyber Resilience

CVE-2022-26992

CriticalPublic PoCRCE

Published: 15 March 2022

Published
15 March 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 0.0956 93.0th percentile
Risk Priority 25 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2022-26992 is a critical-severity OS Command Injection (CWE-78) vulnerability in Arris Sbr-Ac1900P Firmware. Its CVSS base score is 9.8 (Critical).

Operationally, ranked in the top 7.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

Deeper analysis

The vulnerability CVE-2022-26992 is a command injection flaw present in the ddns function of Arris routers including models SBR-AC1900P version 1.0.7-B05, SBR-AC3200P version 1.0.7-B05, and SBR-AC1200P version 1.0.5-B05. It arises from improper handling of the DdnsUserName, DdnsHostName, and DdnsPassword parameters, enabling attackers to inject and execute arbitrary commands through specially crafted requests. The issue carries a CVSS score of 9.8 and is classified under CWE-78.

Unauthenticated attackers with network access can exploit this vulnerability to achieve remote code execution on the affected devices, potentially leading to full compromise of the router's confidentiality, integrity, and availability. The exploitation probability as measured by EPSS stands at 0.0956 with no observed increase from its peak value. The provided references point to a GitHub repository detailing the vulnerability but do not include information on official patches or mitigation steps from the vendor.

EU & UK References

Vulnerability details

Arris routers SBR-AC1900P 1.0.7-B05, SBR-AC3200P 1.0.7-B05 and SBR-AC1200P 1.0.5-B05 were discovered to contain a command injection vulnerability in the ddns function via the DdnsUserName, DdnsHostName, and DdnsPassword parameters. This vulnerability allows attackers to execute arbitrary commands via a crafted request.

CWE(s)
CWE-78

Related Threats

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

Affected Assets

arris
sbr-ac1900p firmware
1.0.7-b05
arris
sbr-ac3200p firmware
1.0.7-b05
arris
sbr-ac1200p firmware
1.0.5-b05

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