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CVE-2022-27646

HIGHCVSS 8.8/10EPSS 1.43%

Last modified

CVE-2022-27646 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6700v3 1.0.4.120_10.0.91 routers. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. EPSS estimates a 1.43% chance of exploitation in the next 30 days.

Description

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6700v3 1.0.4.120_10.0.91 routers. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the circled daemon. A crafted circleinfo.txt file can trigger an overflow of a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-15879.

Metrics

CVSS 3.1
8.8/10

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
1.43%

69.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
NetgearR6400 Firmware< 1.0.4.126
NetgearR6700 Firmware< 1.0.4.126
NetgearR6900p Firmware< 1.3.3.148
NetgearR7000 Firmware< 1.0.11.134
NetgearR7000p Firmware< 1.3.3.148
NetgearR7850 Firmware< 1.0.5.84
NetgearR7960p Firmware< 1.4.3.88
NetgearR8000 Firmware< 1.0.4.84
NetgearR8000p Firmware< 1.4.3.88
NetgearRax200 Firmware< 1.0.6.138
NetgearRax75 Firmware< 1.0.6.138
NetgearRax80 Firmware< 1.0.6.138
NetgearRs400 Firmware< 1.5.1.86
NetgearCbr40 Firmware< 2.5.0.28
NetgearLbr1020 Firmware< 2.7.4.2
NetgearLbr20 Firmware< 2.7.4.2
NetgearRbr10 Firmware< 2.7.4.24
NetgearRbr20 Firmware< 2.7.4.24
NetgearRbr40 Firmware< 2.7.4.24
NetgearRbr50 Firmware< 2.7.4.24
NetgearRbs10 Firmware< 2.7.4.24
NetgearRbs20 Firmware< 2.7.4.24
NetgearRbs40 Firmware< 2.7.4.24
NetgearRbs50 Firmware< 2.7.4.24

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2022-27646?
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6700v3 1.0.4.120_10.0.91 routers. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the circled daemon. A crafted circleinfo.txt file can trigger an overflow of a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-15879.
How severe is CVE-2022-27646?
CVE-2022-27646 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.43% probability of exploitation in the next 30 days.
How do I fix CVE-2022-27646?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-27646?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST