Skip to main content

R6700 Firmware CVE-2020-10927

HIGH
Use of a Broken or Risky Cryptographic Algorithm (CWE-327)
2020-07-28 zdi-disclosures@trendmicro.com
RCE Netgear R6700 Firmware
8.8
CVSS 3.1 · NVD
View

Vulnerability Assessment

Weakness
CWE
CWE-327
OWASP Top 10:2025
A04:2025 - Cryptographic Failures
ASVS 5.0
V11 - Cryptography Approved algorithm selection
Impact

CVSS score of 8.8 (HIGH). Attack characteristics: adjacent network attack vector, low complexity, no privileges required, no user interaction not required.
Exploit ScenarioDerived

Successful exploitation could compromise the high-severity affected system.
This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.9% exploitation probability (EPSS)

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAI

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6700 V1.0.4.84_10.0.58 routers. Rated high severity (CVSS 8.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Sign in to check
Technical ContextAI · show details

This vulnerability is classified under CWE-327. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6700 V1.0.4.84_10.0.58 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the encryption of firmware update images. The issue results from the use of an inappropriate encryption algorithm. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root. Was ZDI-CAN-9649. Affected products include: Netgear R6700 Firmware.

Know when R6700 Firmware gets its next vulnerability

  • Watch products and get an email when something new is published
  • Check this CVE against your own stack and servers
  • Exploit and PoC references, threat intelligence from 22 sources
Continue with Google Continue with GitHub

No credit card · 7-day full trial

Severity by source

NVD PRIMARY 8.8 HIGH
AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

DescriptionNVD

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6700 V1.0.4.84_10.0.58 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the encryption of firmware update images. The issue results from the use of an inappropriate encryption algorithm. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root. Was ZDI-CAN-9649.

Threat Intelligence Overview

EPSS Score
0.9%
Top 44% exploitable
Data Quality
2 sources
Confidence: Low
NVD CVE.org EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.9%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Controlled
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

45
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +44
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Affected Products (CPE)NVD

cpe:2.3:o:netgear:r6700_firmware:1.0.4.84_10.0.58:*:*:*:*:*:*:*

More in R6700 Firmware

View all
CVE-2023-33533 HIGH POC
8.8 Jun 06

Netgear D6220 with Firmware Version 1.0.0.80, D8500 with Firmware Version 1.0.3.60, R6700 with Firmware Version 1.0.2.26
CVE-2021-20173 HIGH POC
8.8 Dec 30

Netgear Nighthawk R6700 version 1.0.4.120 contains a command injection vulnerability in update functionality of the devi
CVE-2020-10924 HIGH POC
8.8 Jul 28

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R6700
CVE-2020-10923 HIGH POC
8.8 Jul 28

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R6700
CVE-2021-40847 HIGH POC
8.1 Sep 21

The update process of the Circle Parental Control Service on various NETGEAR routers allows remote attackers to achieve

CVE-2019-17372 HIGH POC
8.1 Oct 09

Certain NETGEAR devices allow remote attackers to disable all authentication requirements by visiting genieDisableLanCha
CVE-2023-30280 CRITICAL
9.8 Apr 26

Buffer Overflow vulnerability found in Netgear R6900 v.1.0.2.26, R6700v3 v.1.0.4.128, R6700 v.1.0.0.26 allows a remote a
CVE-2021-45512 CRITICAL
9.8 Dec 26

Certain NETGEAR devices are affected by weak cryptography. Rated critical severity (CVSS 9.8), this vulnerability is rem
CVE-2021-38516 CRITICAL
9.8 Aug 11

Certain NETGEAR devices are affected by lack of access control at the function level. Rated critical severity (CVSS 9.8)
CVE-2020-35796 CRITICAL
9.8 Dec 30

Certain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker. Rated critical severity (CVSS

CVE-2020-35795 CRITICAL
9.8 Dec 30

Certain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker. Rated critical severity (CVSS

CVE-2020-26927 CRITICAL
9.8 Oct 09

Certain NETGEAR devices are affected by authentication bypass. Rated critical severity (CVSS 9.8), this vulnerability is

Same weakness CWE-327 – Use of a Broken or Risky Cryptographic Algorithm

View all
CVE-2022-3365 CRITICAL POC
9.8
CVE-2014-8687 CRITICAL POC
9.8
CVE-2017-17382 MEDIUM POC
5.9
CVE-2016-6602 CRITICAL POC
9.8
CVE-2023-34039 CRITICAL POC
9.8
CVE-2025-2539 HIGH POC
7.5
CVE-2017-9466 CRITICAL POC
9.8
CVE-2023-5347 CRITICAL POC
9.8

Same technique RCE

View all
CVE-2021-44228 CRITICAL POC
10.0
CVE-2017-7269 CRITICAL POC
9.8
CVE-2022-47966 CRITICAL POC
9.8
CVE-2012-4681 CRITICAL POC
9.8
CVE-2023-3519 CRITICAL POC
9.8
CVE-2015-5119 CRITICAL POC
9.8
CVE-2016-4117 CRITICAL POC
9.8
CVE-2015-3113 CRITICAL POC
9.8

References

Advisories & patches
REF https://www.zerodayinitiative.com/advisories/ZDI-20-707/

Search Externally

GitHub PoC Exploit-DB PacketStorm Snyk Rapid7 Nuclei Templates Trickest PoC
Back

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy