CVE-2022-27644

Download tampering via improper certificate validation

Published Mar 29, 2023 · Updated Feb 18, 2025

Improper certificate validation in NETGEAR R6700v3 1.0.4.120_10.0.91 allows network-adjacent attackers to alter HTTPS downloads. The router's HTTPS download path accepts a server certificate without proper validation, allowing a man-in-the-middle server to substitute downloaded content. No authentication is required, but code execution as root requires chaining this flaw with another vulnerability.

CVSS severity5.0
Medium
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper certificate validation in NETGEAR R6700v3 1.0.4.120_10.0.91 allows network-adjacent attackers to alter HTTPS downloads. The router's HTTPS download path accepts a server certificate without proper validation, allowing a man-in-the-middle server to substitute downloaded content. No authentication is required, but code execution as root requires chaining this flaw with another vulnerability.

The record

CVE
CVE-2022-27644
Published
Mar 29, 2023
Updated
Feb 18, 2025
Vendor
NETGEAR
Product
R6700v3
Classifications
CWE-295, T1557
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 29, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 18, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.4.120_10.0.91

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

NETGEAR · R6700v3version=1.0.4.120_10.0.91

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
5.0Zero Day InitiativeCVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
7.3NETGEARCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-295Improper Certificate Validation
T1557Adversary-in-the-Middle

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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