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.

Published: 2023-03-29 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-27646 is rated Moderate Risk (54.5/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.43%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2022-27646

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 12.82% 1.43% -11.38%
2 2026-05-17 2.41% 12.82% +10.41%
3 2026-04-16 — 2.41% —

Full EPSS history (17 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-27646

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]
8.0 3.0 HIGH
CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.1 5.9 [email protected]

Weakness enumeration for CVE-2022-27646

Affected software / configurations for CVE-2022-27646

Vendor Product Version Raw CPE
netgear r6400_firmware < 1.0.4.126 cpe:2.3:o:netgear:r6400_firmware:*:*:*:*:*:*:*:*
netgear r6700_firmware < 1.0.4.126 cpe:2.3:o:netgear:r6700_firmware:*:*:*:*:*:*:*:*
netgear r6900p_firmware < 1.3.3.148 cpe:2.3:o:netgear:r6900p_firmware:*:*:*:*:*:*:*:*
netgear r7000_firmware < 1.0.11.134 cpe:2.3:o:netgear:r7000_firmware:*:*:*:*:*:*:*:*
netgear r7000p_firmware < 1.3.3.148 cpe:2.3:o:netgear:r7000p_firmware:*:*:*:*:*:*:*:*
netgear r7850_firmware < 1.0.5.84 cpe:2.3:o:netgear:r7850_firmware:*:*:*:*:*:*:*:*
netgear r7960p_firmware < 1.4.3.88 cpe:2.3:o:netgear:r7960p_firmware:*:*:*:*:*:*:*:*
netgear r8000_firmware < 1.0.4.84 cpe:2.3:o:netgear:r8000_firmware:*:*:*:*:*:*:*:*
netgear r8000p_firmware < 1.4.3.88 cpe:2.3:o:netgear:r8000p_firmware:*:*:*:*:*:*:*:*
netgear rax200_firmware < 1.0.6.138 cpe:2.3:o:netgear:rax200_firmware:*:*:*:*:*:*:*:*
netgear rax75_firmware < 1.0.6.138 cpe:2.3:o:netgear:rax75_firmware:*:*:*:*:*:*:*:*
netgear rax80_firmware < 1.0.6.138 cpe:2.3:o:netgear:rax80_firmware:*:*:*:*:*:*:*:*
netgear rs400_firmware < 1.5.1.86 cpe:2.3:o:netgear:rs400_firmware:*:*:*:*:*:*:*:*
netgear cbr40_firmware < 2.5.0.28 cpe:2.3:o:netgear:cbr40_firmware:*:*:*:*:*:*:*:*
netgear lbr1020_firmware < 2.7.4.2 cpe:2.3:o:netgear:lbr1020_firmware:*:*:*:*:*:*:*:*
netgear lbr20_firmware < 2.7.4.2 cpe:2.3:o:netgear:lbr20_firmware:*:*:*:*:*:*:*:*
netgear rbr10_firmware < 2.7.4.24 cpe:2.3:o:netgear:rbr10_firmware:*:*:*:*:*:*:*:*
netgear rbr20_firmware < 2.7.4.24 cpe:2.3:o:netgear:rbr20_firmware:*:*:*:*:*:*:*:*
netgear rbr40_firmware < 2.7.4.24 cpe:2.3:o:netgear:rbr40_firmware:*:*:*:*:*:*:*:*
netgear rbr50_firmware < 2.7.4.24 cpe:2.3:o:netgear:rbr50_firmware:*:*:*:*:*:*:*:*
netgear rbs10_firmware < 2.7.4.24 cpe:2.3:o:netgear:rbs10_firmware:*:*:*:*:*:*:*:*
netgear rbs20_firmware < 2.7.4.24 cpe:2.3:o:netgear:rbs20_firmware:*:*:*:*:*:*:*:*
netgear rbs40_firmware < 2.7.4.24 cpe:2.3:o:netgear:rbs40_firmware:*:*:*:*:*:*:*:*
netgear rbs50_firmware < 2.7.4.24 cpe:2.3:o:netgear:rbs50_firmware:*:*:*:*:*:*:*:*

References for CVE-2022-27646

cvelogic Threat Intelligence