CVE-2026-5363
Use of weak cryptographic key in TP-Link Archer C7
Description
Inadequate Encryption Strength vulnerability in TP-Link Archer C7 v5 and v5.8 (uhttpd modules) allows Password Recovery Exploitation. The web interface encrypts the admin password client-side using RSA-1024 before sending it to the router during login. An adjacent attacker with the ability to intercept network traffic could potentially perform a brute-force or factorization attack against the 1024-bit RSA key to recover the plaintext administrator password, leading to unauthorized access and compromise of the device configuration. This issue affects Archer C7: through Build 20220715.
INFO
Published Date :
April 16, 2026, 12:16 a.m.
Last Modified :
Oct. 26, 2026, 9:10 p.m.
Remotely Exploit :
No
Source :
f23511db-6c3e-4e32-a477-6aa17d310630
Affected Products
The following products are affected by CVE-2026-5363
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | MEDIUM | f23511db-6c3e-4e32-a477-6aa17d310630 | ||||
| CVSS 4.0 | MEDIUM | f23511db-6c3e-4e32-a477-6aa17d310630 |
Solution
- Update router firmware to the latest available version.
- Ensure encryption uses a stronger algorithm.
- Configure router to use secure password transmission.
- Monitor network traffic for suspicious activity.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-5363.
| URL | Resource |
|---|---|
| https://www.tp-link.com/us/support/faq/3562/ | Not Applicable |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-5363 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-5363
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-5363 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-5363 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 26, 2026
Action Type Old Value New Value Added Translation Title: Archer C7 de TP-Link Systems Inc., Description: Vulnerabilidad de fuerza de cifrado inadecuada en TP-Link Archer C7 v5 y v5.8 (módulos uhttpd) permite la explotación para la recuperación de contraseñas. La interfaz web cifra la contraseña de administrador del lado del cliente usando RSA-1024 antes de enviarla al router durante el inicio de sesión. Un atacante adyacente con la capacidad de interceptar el tráfico de red podría potencialmente realizar un ataque de fuerza bruta o de factorización contra la clave RSA de 1024 bits para recuperar la contraseña de administrador en texto plano, lo que lleva a un acceso no autorizado y al compromiso de la configuración del dispositivo. Este problema afecta a Archer C7: hasta la compilación 20220715. -
CVE Modified by f23511db-6c3e-4e32-a477-6aa17d310630
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'TP-Link Systems Inc.', 'modules': ['uhttpd'], 'product': 'Archer C7 v5 and v5.8', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'custom', 'lessThanOrEqual': 'Build 20220715'}], 'defaultStatus': 'unaffected'}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-5363', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-04-16T13:17:25.657073Z'} -
Reanalysis by [email protected]
May. 22, 2026
Action Type Old Value New Value Changed CPE Configuration AND OR *cpe:2.3:o:tp-link:archer_c7_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:tp-link:archer_c7:5.0:*:*:*:*:*:*:* cpe:2.3:h:tp-link:archer_c7:5.80:*:*:*:*:*:*:* AND OR *cpe:2.3:o:tp-link:archer_c7_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.2.1 OR cpe:2.3:h:tp-link:archer_c7:5.0:*:*:*:*:*:*:* cpe:2.3:h:tp-link:archer_c7:5.80:*:*:*:*:*:*:* -
Initial Analysis by [email protected]
May. 06, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CPE Configuration AND OR *cpe:2.3:o:tp-link:archer_c7_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:tp-link:archer_c7:5.0:*:*:*:*:*:*:* cpe:2.3:h:tp-link:archer_c7:5.80:*:*:*:*:*:*:* Added Reference Type TPLink: https://www.tp-link.com/us/support/faq/3562/ Types: Not Applicable -
New CVE Received by f23511db-6c3e-4e32-a477-6aa17d310630
Apr. 16, 2026
Action Type Old Value New Value Added Tag unsupported-when-assigned Added Description Inadequate Encryption Strength vulnerability in TP-Link Archer C7 v5 and v5.8 (uhttpd modules) allows Password Recovery Exploitation. The web interface encrypts the admin password client-side using RSA-1024 before sending it to the router during login. An adjacent attacker with the ability to intercept network traffic could potentially perform a brute-force or factorization attack against the 1024-bit RSA key to recover the plaintext administrator password, leading to unauthorized access and compromise of the device configuration. This issue affects Archer C7: through Build 20220715. Added CVSS V4.0 AV:A/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-326 Added Reference https://www.tp-link.com/us/support/faq/3562/