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CVE-2025-6982— Hardcoded DES Decryption Keys in TP-Link Archer C50 V3/V4/V5 and C20 V5

Quick assessment

Affected
TP-Link Systems Inc. Archer C50 V3
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

TP-LINK Archer C50是中国普联（TP-LINK）公司的一款无线路由器。 TP-LINK Archer C50 V3 180703及之前版本、V4 250117及之前版本和V5 200407及之前版本存在安全漏洞，该漏洞源于硬编码凭据，可能导致配置文件解密。

AI Predicted 5.9 Difficulty: Trivial EPSS 0.26% · P17

Possible ATT&CK Techniques 1 AI

T1552 · Unsecured Credentials
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I. Basic Information for CVE-2025-6982

Vulnerability Information
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Vulnerability Title
Hardcoded DES Decryption Keys in TP-Link Archer C50 V3/V4/V5 and C20 V5
Source: CVE Program / CVE List V5
Vulnerability Description
Use of Hard-coded Credentials in TP-Link Archer C50 V3( <= 180703)/V4( <= 250117 )/V5( <= 200407 ), and C20 V5 (<US_V5_260419 or <EU_V5_260317) allows attackers to decrypt the config.xml files.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用硬编码的凭证
Source: CVE Program / CVE List V5
Vulnerability Title
TP-LINK Archer C50 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TP-LINK Archer C50是中国普联（TP-LINK）公司的一款无线路由器。 TP-LINK Archer C50 V3 180703及之前版本、V4 250117及之前版本和V5 200407及之前版本存在安全漏洞，该漏洞源于硬编码凭据，可能导致配置文件解密。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
TP-Link Systems Inc. Archer C50 V3 0 ~ 180703 -
TP-Link Systems Inc. Archer C50 V4 0 ~ 250117 -
TP-Link Systems Inc. Archer C50 V5 0 ~ 200407 -
TP-Link Systems Inc. Archer C20 V5 0 ~ US_V5_260419 -

II. Public POCs for CVE-2025-6982

# POC Description Source Link Shenlong Link
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default-local-qwen3.6 · 11423 chars
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III. Intelligence Information for CVE-2025-6982

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IV. Related Vulnerabilities

Same vendor: TP-Link Systems Inc.
Same weakness: CWE-798

V. Comments for CVE-2025-6982

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