What is CVE-2022-27644?

CVE-2022-27644 is a high-severity vulnerability in Netgear Cbr40, classified under Improper Certificate Validation. CVSS score: 8.8/10. Published 2023-03-29.

How severe is CVE-2022-27644?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2022-27644 known to be exploited?

7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Netgear Cbr40

CVE-2022-27644

This vulnerability allows network-adjacent attackers to compromise the integrity of downloaded information on affected installations of NETGEAR R6700v3 1.0.4.120_10.0.91 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the downloading of files via HTTPS. The issue results from the lack of proper validation of the certificate presented by the server. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root. Was ZDI-CAN-15797.

Vulnerability class: Improper Certificate Validation

EPSS: 0.003 (26.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

Public proof-of-concept exploits

References

zdi-disclosures@trendmicro.com (VDB Entry, Third Party Advisory)
zdi-disclosures@trendmicro.com (Vendor Advisory)

Frequently asked questions

What is CVE-2022-27644?: CVE-2022-27644 is a high-severity vulnerability in Netgear Cbr40, classified under Improper Certificate Validation. CVSS score: 8.8/10. Published 2023-03-29.
How severe is CVE-2022-27644?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2022-27644 known to be exploited?: 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.