🛡️ CVE-2022-40620 — r6230-firmware

🟠 CVSS 7.7 — High ⚠️ Exploit Public CWE-295 NVD
7.7
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

FunJSQ, a third-party module integrated on some NETGEAR routers and Orbi WiFi Systems, does not properly validate TLS certificates when downloading update packages through its auto-update mechanism. An attacker (suitably positioned on the network) could intercept the update request and deliver a malicious update package in order to gain arbitrary code execution on affected devices. This affects R6230 before 1.1.0.112, R6260 before 1.1.0.88, R7000 before 1.0.11.134, R8900 before 1.0.5.42, R9000 before 1.0.5.42, and XR300 before 1.0.3.72 and Orbi RBR20 before 2.7.2.26, RBR50 before 2.7.4.26, RBS20 before 2.7.2.26, and RBS50 before 2.7.4.26.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability low.

Weakness class

CVE-2022-40620 is classified as CWE-295: Improper Certificate Validation. A TLS certificate is accepted without proper verification, so a man-in-the-middle can present their own.

Affected software

CVE-2022-40620 is recorded against 10 packages.

  • r6230-firmware (fixed in 1.1.0.112)
  • r6260-firmware (fixed in 1.1.0.88)
  • r7000-firmware (fixed in 1.0.11.134)
  • r8900-firmware (fixed in 1.0.5.42)
  • r9000-firmware (fixed in 1.0.5.42)
  • rax120-firmware (fixed in 1.2.8.40)
  • rax120v2-firmware (fixed in 1.2.8.40)
  • rbr20-firmware (fixed in 2.7.2.26)
  • rbs20-firmware (fixed in 2.7.2.26)
  • xr300-firmware (fixed in 1.0.3.72)

Timeline and source

Published on 28 January 2026 and last revised on 17 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. Record sourced from NVD.

References

kb.netgear.com
www.onekey.com

Details

Severity HIGH
CVSS Score 7.7
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
CWE CWE-295
Public Exploit ⚠️ Yes
Source NVD
Published 2026-01-28
Updated 2026-08-11
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
r6230-firmware — 1.1.0.112
r6260-firmware — 1.1.0.88
r7000-firmware — 1.0.11.134
r8900-firmware — 1.0.5.42
r9000-firmware — 1.0.5.42
rax120-firmware — 1.2.8.40
rax120v2-firmware — 1.2.8.40
rbr20-firmware — 2.7.2.26
rbs20-firmware — 2.7.2.26
xr300-firmware — 1.0.3.72

Similar Threats

Exploit Protection

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