CVE-2022-26991
Published: 15 March 2022
Summary
CVE-2022-26991 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
Arris routers including the SBR-AC1900P 1.0.7-B05, SBR-AC3200P 1.0.7-B05, and SBR-AC1200P 1.0.5-B05 contain a command injection vulnerability in the ntp function that is triggered through the TimeZone parameter. The issue, tracked as CVE-2022-26991 and mapped to CWE-78, allows arbitrary command execution when a crafted request is submitted to the affected devices.
An unauthenticated attacker with network access can exploit the flaw to run arbitrary commands on the router, resulting in complete control over device confidentiality, integrity, and availability as reflected in the CVSS 9.8 score.
Public references consist of technical write-ups that demonstrate the injection vector but contain no details on vendor advisories, firmware updates, or recommended mitigations. The associated EPSS score has remained flat at 0.0956 with no material rise since disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-31531
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 ntp function via the TimeZone parameter. This vulnerability allows attackers to execute arbitrary commands via a crafted request.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
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.