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Ac1750 Firmware CVE-2020-10884

HIGH
Use of Hard-coded Cryptographic Key (CWE-321)
2020-03-25 zdi-disclosures@trendmicro.com
8.8
CVSS 3.1 · NVD
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A04:2025 - Cryptographic Failures
ASVS 5.0
V11 - Cryptography Key management, no hard-coded keys
Impact

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

Exploit ScenarioDerived

Successful exploitation could compromise the high-severity affected system.

Act Now Prioritize within 24-48h. Why: HIGH severity + EPSS > 10%.
No patch listed yet 24.7% exploitation probability (EPSS)

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AnalysisAI

This vulnerability allows network-adjacent attackers execute arbitrary code on affected installations of TP-Link Archer A7 Firmware Ver: 190726 AC1750 routers. Rated high severity (CVSS 8.8), this vulnerability is no authentication required, 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. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

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Technical ContextAI · show details

This vulnerability is classified under CWE-321. This vulnerability allows network-adjacent attackers execute arbitrary code on affected installations of TP-Link Archer A7 Firmware Ver: 190726 AC1750 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the tdpServer service, which listens on UDP port 20002 by default. This issue results from the use of hard-coded encryption key. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root. Was ZDI-CAN-9652. Affected products include: Tp-Link Ac1750 Firmware.

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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: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 execute arbitrary code on affected installations of TP-Link Archer A7 Firmware Ver: 190726 AC1750 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the tdpServer service, which listens on UDP port 20002 by default. This issue results from the use of hard-coded encryption key. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root. Was ZDI-CAN-9652.

Threat Intelligence Overview

EPSS Score
24.7%
Top 2% exploitable
Exploit
POC
Public exploit code exists
Data Quality
4 sources
Confidence: Medium

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 24.7%
Patch available No
Active threat Yes
Deciding rule
HIGH severity + EPSS > 10%
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
Out-of-Cycle
Exploitation· derived
Active
System Exposure· derived
Controlled
Automatable· derived
No
Human Impact· derived
High

Priority Score

104
Low Medium High Critical
KEV: 0
EPSS: +25
CVSS: +44
PoC: +20
Weaponized: +15
Threat intel: 0
Gov advisory: 0

Attack Technique

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:tp-link:ac1750_firmware:190726:*:*:*:*:*:*:*
CVE-2020-28347 CRITICAL POC
9.8 Nov 08

tdpServer on TP-Link Archer A7 AC1750 devices before 201029 allows remote attackers to execute arbitrary code via the sl

CVE-2020-10882 HIGH POC
8.8 Mar 25

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of TP-Link Arch

CVE-2020-10883 HIGH POC
7.8 Mar 25

This vulnerability allows local attackers to escalate privileges on affected installations of TP-Link Archer A7 Firmware

CVE-2020-10888 CRITICAL
9.8 Mar 25

This vulnerability allows remote attackers to bypass authentication on affected installations of TP-Link Archer A7 Firmw

CVE-2020-10887 CRITICAL
9.8 Mar 25

This vulnerability allows a firewall bypass on affected installations of TP-Link Archer A7 Firmware Ver: 190726 AC1750 r

CVE-2020-10886 CRITICAL
9.8 Mar 25

This vulnerability allows remote attackers to execute arbitrary code on affected installations of TP-Link Archer A7 Firm

CVE-2020-10885 CRITICAL
9.8 Mar 25

This vulnerability allows remote attackers to execute arbitrary code on affected installations of TP-Link Archer A7 Firm

CVE-2020-10881 CRITICAL
9.8 Mar 25

This vulnerability allows remote attackers to execute arbitrary code on affected installations of TP-Link Archer A7 Firm

CVE-2022-24354 HIGH
8.8 Feb 18

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of TP-Link AC17

CVE-2021-27246 HIGH
8.0 Apr 14

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of TP-Link Arch

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