CVE & CISA-KEV Catalog

CVE-2022-27646

HIGH
8.8
CVSS v3
NVD

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.

CWE-121Stack-based Buffer Overflow

How to fix

Remediation Available
cbr40 firmwareNVD
Affected:< 2.5.0.28Fixed in:2.5.0.28CVE-2022-27646derived from NVD
lbr1020 firmwareNVD
Affected:< 2.7.4.2Fixed in:2.7.4.2CVE-2022-27646derived from NVD
lbr20 firmwareNVD
Affected:< 2.7.4.2Fixed in:2.7.4.2CVE-2022-27646derived from NVD
r6400 firmwareNVD
Affected:< 1.0.4.126Fixed in:1.0.4.126CVE-2022-27646derived from NVD
r6700 firmwareNVD
Affected:< 1.0.4.126Fixed in:1.0.4.126CVE-2022-27646derived from NVD
r6900p firmwareNVD
Affected:< 1.3.3.148Fixed in:1.3.3.148CVE-2022-27646derived from NVD
r7000 firmwareNVD
Affected:< 1.0.11.134Fixed in:1.0.11.134CVE-2022-27646derived from NVD
r7000p firmwareNVD
Affected:< 1.3.3.148Fixed in:1.3.3.148CVE-2022-27646derived from NVD
r7850 firmwareNVD
Affected:< 1.0.5.84Fixed in:1.0.5.84CVE-2022-27646derived from NVD
r7960p firmwareNVD
Affected:< 1.4.3.88Fixed in:1.4.3.88CVE-2022-27646derived from NVD
r8000 firmwareNVD
Affected:< 1.0.4.84Fixed in:1.0.4.84CVE-2022-27646derived from NVD
r8000p firmwareNVD
Affected:< 1.4.3.88Fixed in:1.4.3.88CVE-2022-27646derived from NVD
rax200 firmwareNVD
Affected:< 1.0.6.138Fixed in:1.0.6.138CVE-2022-27646derived from NVD
rax75 firmwareNVD
Affected:< 1.0.6.138Fixed in:1.0.6.138CVE-2022-27646derived from NVD
rax80 firmwareNVD
Affected:< 1.0.6.138Fixed in:1.0.6.138CVE-2022-27646derived from NVD
rbr10 firmwareNVD
Affected:< 2.7.4.24Fixed in:2.7.4.24CVE-2022-27646derived from NVD
rbr20 firmwareNVD
Affected:< 2.7.4.24Fixed in:2.7.4.24CVE-2022-27646derived from NVD
rbr40 firmwareNVD
Affected:< 2.7.4.24Fixed in:2.7.4.24CVE-2022-27646derived from NVD
rbr50 firmwareNVD
Affected:< 2.7.4.24Fixed in:2.7.4.24CVE-2022-27646derived from NVD
rbs10 firmwareNVD
Affected:< 2.7.4.24Fixed in:2.7.4.24CVE-2022-27646derived from NVD
rbs20 firmwareNVD
Affected:< 2.7.4.24Fixed in:2.7.4.24CVE-2022-27646derived from NVD
rbs40 firmwareNVD
Affected:< 2.7.4.24Fixed in:2.7.4.24CVE-2022-27646derived from NVD
rbs50 firmwareNVD
Affected:< 2.7.4.24Fixed in:2.7.4.24CVE-2022-27646derived from NVD
rs400 firmwareNVD
Affected:< 1.5.1.86Fixed in:1.5.1.86CVE-2022-27646derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorAdjacent
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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

Exploit Intelligence

1.43%probability of exploitation in 30 days
70thpercentile

Moderate risk: more likely to be exploited than 70% of all known CVEs.

References

Vendor Advisory1
Third-Party Advisory1

Related Vulnerabilities

Other CWE-121 (Stack-based Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2025-22457Critical9.0100%KEV + RansomFix
CVE-2025-0282Critical9.0100%KEV + Ransom-
CVE-2021-20038Critical9.8100%KEV + Ransom-
CVE-2009-0927High8.897%KEVFix
CVE-2020-10924High8.887%--
CVE-2022-20705Critical10.080%--
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.