What is the CVSS score of CVE-2021-29073?

CVE-2021-29073 has a CVSS 3.1 base score of 8.4 (High). CVSS vector: CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H. EPSS exploitation probability: 0.3%.

Rax50 Firmware CVE-2021-29073

HIGH

Out-of-bounds Write (CWE-787)

2021-03-23 cve@mitre.org

Buffer Overflow Memory Corruption Netgear Rax50 Firmware R7900P Firmware R8000P Firmware Mk62 Firmware Mr60 Firmware Ms60 Firmware Rax20 Firmware Rax80 Firmware R7960P Firmware Rax15 Firmware Rax200 Firmware Rax45 Firmware Rax75 Firmware

8.4

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-787 ASVS 5.0 V15 - Secure Coding and Architecture Bounds checking, write limits MITRE ATT&CK 2 techniques across 2 tactics: Execution, Privilege Escalation The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS score of 8.4 (HIGH). Attack characteristics: adjacent network attack vector, low complexity, high privileges required, no user interaction not required.
Exploit ScenarioDerived	An attacker could exploit this vulnerability to write data beyond allocated buffer boundaries leading to code execution or crashes.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAI

Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. Rated high severity (CVSS 8.4), this vulnerability is low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate write boundaries, use memory-safe languages, enable compiler protections (ASLR, stack canaries).

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.

Technical ContextAI · show details

This vulnerability is classified as Out-of-bounds Write (CWE-787), which allows attackers to write data beyond allocated buffer boundaries leading to code execution or crashes. Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects R8000P before 1.4.1.66, MK62 before 1.0.6.110, MR60 before 1.0.6.110, MS60 before 1.0.6.110, R7960P before 1.4.1.66, R7900P before 1.4.1.66, RAX15 before 1.0.2.82, RAX20 before 1.0.2.82, RAX45 before 1.0.2.72, RAX50 before 1.0.2.72, RAX75 before 1.0.3.106, RAX80 before 1.0.3.106, and RAX200 before 1.0.3.106. Affected products include: Netgear R8000P Firmware, Netgear Mk62 Firmware, Netgear Mr60 Firmware, Netgear Ms60 Firmware, Netgear R7960P Firmware. Version information: before 1.4.1.66.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 8.4 HIGH

AV:A/AC:L/PR:H/UI:N/S:C/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

High

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

DescriptionNVD

Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects R8000P before 1.4.1.66, MK62 before 1.0.6.110, MR60 before 1.0.6.110, MS60 before 1.0.6.110, R7960P before 1.4.1.66, R7900P before 1.4.1.66, RAX15 before 1.0.2.82, RAX20 before 1.0.2.82, RAX45 before 1.0.2.72, RAX50 before 1.0.2.72, RAX75 before 1.0.3.106, RAX80 before 1.0.3.106, and RAX200 before 1.0.3.106.

Threat Intelligence Overview

EPSS Score

0.3%

Top 74% 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 0.3%

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

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +42

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Buffer Overflow HIGH

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

Memory Corruption HIGH

Memory corruption occurs when a program writes data beyond the boundaries of allocated memory regions or accesses memory in unintended ways, violating the integrity of the process's address space.

Affected Products (CPE)NVD

cpe:2.3:o:netgear:r8000p_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:netgear:mk62_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:netgear:mr60_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:netgear:ms60_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:netgear:r7960p_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:netgear:r7900p_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:netgear:rax15_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:netgear:rax20_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:netgear:rax45_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:netgear:rax50_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:netgear:rax75_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:netgear:rax80_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:netgear:rax200_firmware:*:*:*:*:*:*:*:*

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