CVE-2022-27646

high-risk
Published 2023-03-29

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.

Do I need to act?

~
1.7% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
ADJACENT_NETWORK / LOW complexity

Affected Products (20)

Lbr1020 Firmware
Lbr20 Firmware
Rbr10 Firmware

Affected Vendors

Netgear

References (4)

Vendor Advisory https://kb.netgear.com/000064721/Security-Advisory-for-Multiple-Vulnerabilities-...
Third Party Advisory https://www.zerodayinitiative.com/advisories/ZDI-22-523/
Vendor Advisory https://kb.netgear.com/000064721/Security-Advisory-for-Multiple-Vulnerabilities-...
Third Party Advisory https://www.zerodayinitiative.com/advisories/ZDI-22-523/
52
/ 100
high-risk
Severity 27/34 · High
Exploitability 4/34 · Minimal
Exposure 21/34 · High