What is the CVSS score of CVE-2022-35491?

CVE-2022-35491 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.7%.

A3002ru Firmware CVE-2022-35491

CRITICAL

Use of Hard-coded Credentials (CWE-798)

2022-08-10 cve@mitre.org

Authentication Bypass A3002ru Firmware TOTOLINK

9.8

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-798 OWASP Top 10:2025 A07:2025 - Authentication Failures ASVS 5.0 V6 - Authentication Credential externalization MITRE ATT&CK 2 techniques across 2 tactics: Persistence, Credential Access 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 9.8 (CRITICAL). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required.
Exploit ScenarioDerived	A remote attacker could gain access using credentials embedded in source code by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.

No patch listed yet 0.7% exploitation probability (EPSS)

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AnalysisAI

TOTOLINK A3002RU V3.0.0-B20220304.1804 has a hardcoded password for root in /etc/shadow.sample. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, 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. Remove hard-coded credentials, use environment variables or secrets management, rotate exposed credentials immediately.

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 Use of Hard-coded Credentials (CWE-798), which allows attackers to gain access using credentials embedded in source code. TOTOLINK A3002RU V3.0.0-B20220304.1804 has a hardcoded password for root in /etc/shadow.sample. Affected products include: Totolink A3002Ru Firmware.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 9.8 CRITICAL

AV:N/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

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionNVD

TOTOLINK A3002RU V3.0.0-B20220304.1804 has a hardcoded password for root in /etc/shadow.sample.

Threat Intelligence Overview

EPSS Score

0.7%

Top 51% exploitable

Data Quality

3 sources

Confidence: Low

NVD

CVE.org

EPSS

GitHub

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 CRITICAL

CISA KEV No

Public POC No

EPSS 0.7%

Patch available No

Active threat No

Deciding rule

CRITICAL severity

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

Open

Automatable· derived

Yes

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +1

CVSS: +49

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Authentication Bypass CRITICAL

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Affected Products (CPE)NVD

cpe:2.3:o:totolink:a3002ru_firmware:3.0.0-b20220304.1804:*:*:*:*:*:*:*

More in A3002ru Firmware

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CVE-2024-34198 CRITICAL Act Now POC

9.8 Aug 28

TOTOLINK AC1200 Wireless Router A3002RU V2.1.1-B20230720.1011 is vulnerable to Buffer Overflow. Rated critical severity

CVE-2018-13316 CRITICAL Act Now POC

9.8 Nov 27

System command injection in formAliasIp in TOTOLINK A3002RU version 1.0.8 allows attackers to execute system commands vi

CVE-2018-13314 CRITICAL Act Now POC

9.8 Nov 27

System command injection in formAliasIp in TOTOLINK A3002RU version 1.0.8 allows attackers to execute system commands vi

CVE-2018-13307 CRITICAL Act Now POC

9.8 Nov 27

System command injection in fromNtp in TOTOLINK A3002RU version 1.0.8 allows attackers to execute system commands via th

CVE-2018-13306 CRITICAL Act Now POC

9.8 Nov 27

System command injection in formDlna in TOTOLINK A3002RU version 1.0.8 allows attackers to execute system commands via t

CVE-2018-13315 CRITICAL Act Now POC

9.8 Nov 26

Incorrect access control in formPasswordSetup in TOTOLINK A3002RU version 1.0.8 allows attackers to change the admin use

CVE-2025-6393 HIGH This Week POC

8.8 Jun 21

CVE-2025-6393 is a critical buffer overflow vulnerability in the HTTP POST request handler of TOTOLINK routers affecting

CVE-2025-6163 HIGH This Week POC

8.8 Jun 17

Critical buffer overflow vulnerability in TOTOLINK A3002RU routers (version 3.0.0-B20230809.1615 and potentially others)

CVE-2025-6148 HIGH This Week POC

8.8 Jun 17

Critical remote buffer overflow vulnerability in TOTOLINK A3002RU firmware version 3.0.0-B20230809.1615 affecting the HT

CVE-2025-6337 HIGH This Week POC

8.8 Jun 20

CVE-2025-6337 is a critical buffer overflow vulnerability in TOTOLINK A3002R and A3002RU routers affecting versions 3.0.

CVE-2025-6953 HIGH This Week POC

8.8 Jul 01

A vulnerability, which was classified as critical, was found in TOTOLINK A3002RU 3.0.0-B20230809.1615. Affected is an un

CVE-2026-26736 HIGH This Week POC

8.8 Feb 17

Stack-based buffer overflow in TOTOLIK A3002RU firmware versions up to V3.0.0-B20220304.1804 allows authenticated attack

Same weakness CWE-798 – Use of Hard-coded Credentials

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CVE-2016-1560 CRITICAL POC

9.8

CVE-2017-14143 CRITICAL POC

9.8

CVE-2025-14611 HIGH POC

7.1

CVE-2026-22769 CRITICAL

10.0

CVE-2016-5678 CRITICAL POC

9.8

CVE-2017-6558 CRITICAL POC

9.8

CVE-2015-7246 CRITICAL POC

9.8

CVE-2015-4667 CRITICAL POC

9.8

Same technique Authentication Bypass

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CVE-2015-3306 CRITICAL POC

10.0

CVE-2023-22515 CRITICAL POC

9.8

CVE-2012-4681 CRITICAL POC

9.8

CVE-2013-2465 CRITICAL POC

9.8

CVE-2011-3544 CRITICAL POC

9.8

CVE-2022-40684 CRITICAL POC

9.8

CVE-2025-61882 CRITICAL POC

9.8

CVE-2024-0012 CRITICAL POC

9.3

References

Advisories & patches

REF https://github.com/1337536723/iot/blob/main/totolink/A3002RU.md

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GitHub PoC

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