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CVE-2022-27644

HIGH
8.8
CVSS Score
Published: March 29, 2023 at 12:00 AM UTC
Updated: June 17, 2026 at 04:37 AM UTC
49 products affected across 1 vendorR6700 FirmwareR7000P FirmwareR7000 Firmware

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Severity
HIGH8.8
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

CBR40 Firmware· NETGEAR
95%
v < 2.5.0.28
Affected range stops below 2.5.0.28, so it looks safe — our inference, not a vendor statement
netgear-cbr40 (same device)
LBR1020 Firmware· NETGEAR
95%
v < 2.7.4.2
Affected range stops below 2.7.4.2, so it looks safe — our inference, not a vendor statement
netgear-lbr1020 (same device)
LBR20 Firmware· NETGEAR
95%
v < 2.7.4.2
Affected range stops below 2.7.4.2, so it looks safe — our inference, not a vendor statement
netgear-lbr20 (same device)
R6400 Firmware· NETGEAR
95%
v < 1.0.4.126
Affected range stops below 1.0.4.126, so it looks safe — our inference, not a vendor statement
R6700 Firmware· NETGEAR
95%
v < 1.0.4.126
Affected range stops below 1.0.4.126, so it looks safe — our inference, not a vendor statement
netgear-r6700 (same device)
R6900P Firmware· NETGEAR
95%
v < 1.3.3.148
Affected range stops below 1.3.3.148, so it looks safe — our inference, not a vendor statement
R7000 Firmware· NETGEAR
95%
v < 1.0.11.134
Affected range stops below 1.0.11.134, so it looks safe — our inference, not a vendor statement
netgear-r7000 (same device)
R7000P Firmware· NETGEAR
95%
v < 1.3.3.148
Affected range stops below 1.3.3.148, so it looks safe — our inference, not a vendor statement
netgear-r7000p (same device)
R7850 Firmware· NETGEAR
95%
v < 1.0.5.84
Affected range stops below 1.0.5.84, so it looks safe — our inference, not a vendor statement
netgear-r7850 (same device)
R7960P Firmware· NETGEAR
95%
v < 1.4.3.88
Affected range stops below 1.4.3.88, so it looks safe — our inference, not a vendor statement
netgear-r7960p (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Vendor Advisory
Source: [email protected]
https://kb.netgear.com/000064721/Security-Advisory-for-Multiple-Vulnerabilities-on-Multiple-Products-PSV-2021-0324
Third Party AdvisoryVDB Entry
Source: [email protected]
https://www.zerodayinitiative.com/advisories/ZDI-22-520/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGH[email protected]
Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-295

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