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CVE-2022-27643· NVD / CVE Program· CNA zdi

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6700v3 1.0.4.120_10.0.9

This vulnerability allows network-adjacent attackers to execute arbitrary code 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 handling of SOAP requests. When parsing the SOAPAction header, the process does not properly validate the length of user-supplied data prior to copying it to a buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-15692.

HighCVSS 8.8 · v3.1—No exploit No fix recorded
Published
Mar 29, 2023
Updated
Jun 17, 2026
EPSS
25.4% · 98th percentile
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JSON

Action score

43

Plan

Add it to your regular patch cycle.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
8 / 30 · 25.4%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
8.8
CNA · zdi
8.8
agree

CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Noroxi analysis

No Noroxi analysis for this record yet

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Affected systems

VendorProduct
netgearr6400 firmware
netgearr6400
netgearr6700 firmware
netgearr6700
netgearr6900p firmware
netgearr6900p
netgearr7000 firmware
netgearr7000
netgearr7000p firmware
netgearr7000p
netgearr7850 firmware
netgearr7850

and 42 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • netgear d6220 firmwarebefore 1.0.0.80
  • netgear d6400 firmwarebefore 1.0.0.114
  • netgear d7000v2 firmwarebefore 1.0.0.80
  • netgear dc112a firmwarebefore 1.0.0.64
  • netgear ex3700 firmwarebefore 1.0.0.96
  • netgear ex3800 firmwarebefore 1.0.0.96
  • netgear ex6120 firmwarebefore 1.0.0.68
  • netgear ex6130 firmwarebefore 1.0.0.48
  • netgear r6400 firmwarebefore 1.0.1.78
  • netgear r6400 firmwarebefore 1.0.4.126
  • netgear r6700 firmwarebefore 1.0.4.126
  • netgear r6900p firmwarebefore 1.3.3.148
  • netgear r7000 firmwarebefore 1.0.11.134
  • netgear r7000p firmwarebefore 1.3.3.148
  • netgear r7100lg firmwarebefore 1.0.0.76
  • netgear r7850 firmwarebefore 1.0.5.84
  • netgear r7900p firmwarebefore 1.4.3.88
  • netgear r7960p firmwarebefore 1.4.3.88
  • netgear r8000 firmwarebefore 1.0.4.84
  • netgear r8000p firmwarebefore 1.4.3.88

Versions reported by the vendor

Affected version ranges reported by the assigning authority (zdi). Independent of NVD's CPE analysis and usually ahead of it.

  • NETGEAR R6700v3

    • 1.0.4.120_10.0.91affected

Same product

netgear: all records

Other highest-scoring records for the same primary product.

  • CVE-2020-11789Certain NETGEAR devices are affected by command injection by an unauthenticated attacker.
    40Plan
  • CVE-2022-27646This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6700v3 1.0.4.120_10.0.9
    35Monitor
  • CVE-2022-27644This vulnerability allows network-adjacent attackers to compromise the integrity of downloaded information on affected installations of NETG
    35Monitor
  • CVE-2021-45606Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user.
    35Monitor
  • CVE-2021-45605Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user.
    35Monitor
  • CVE-2017-18864Certain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker.
    35Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days+1% in 7 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone on the same network segment can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Adjacent
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Root cause

When data is copied, the source length is not compared with the size of the destination buffer. Excess data overwrites adjacent memory.

The bug in code

The whole CWE-120 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

c
char buf[256];memcpy(buf, pkt->data, pkt->len);

Fixed

c
char buf[256];if (pkt->len > sizeof(buf)) {  return -EINVAL;}memcpy(buf, pkt->data, pkt->len);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records