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A3002ru Firmware CVE-2023-48859

HIGH
Incorrect Authorization (CWE-863)
2023-12-06 cve@mitre.org
8.8
CVSS 3.1 · NVD
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Authorization logic validation
MITRE ATT&CK

1 technique across 1 tactic: Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 8.8 (HIGH). Attack characteristics: network attack vector, low complexity, low privileges required, no user interaction not required. Public proof-of-concept exploit code is available.

Exploit ScenarioDerived

A remote attacker could bypass authorization checks to access restricted resources by sending crafted requests to the affected application.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 1.2% exploitation probability (EPSS)

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AnalysisAI

TOTOLINK A3002RU version 2.0.0-B20190902.1958 has a post-authentication RCE due to incorrect access control, allows attackers to bypass front-end security restrictions and execute arbitrary code. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Review and test authorization logic, implement consistent access control checks, use centralized authorization framework.

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 Incorrect Authorization (CWE-863), which allows attackers to bypass authorization checks to access restricted resources. TOTOLINK A3002RU version 2.0.0-B20190902.1958 has a post-authentication RCE due to incorrect access control, allows attackers to bypass front-end security restrictions and execute arbitrary code. Affected products include: Totolink A3002Ru Firmware. Version information: version 2.0.0.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 8.8 HIGH
AV:N/AC:L/PR:L/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
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

DescriptionNVD

TOTOLINK A3002RU version 2.0.0-B20190902.1958 has a post-authentication RCE due to incorrect access control, allows attackers to bypass front-end security restrictions and execute arbitrary code.

Threat Intelligence Overview

EPSS Score
1.2%
Top 35% exploitable
Exploit
POC
Public exploit code exists
Data Quality
3 sources
Confidence: Low

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 Yes
EPSS 1.2%
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
Poc
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

65
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +44
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

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

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:totolink:a3002ru_firmware:2.0.0-b20190902.1958:*:*:*:*:*:*:*
CVE-2024-34198 CRITICAL 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 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 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 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 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 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 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 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 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 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 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 POC
8.8 Feb 17

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

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