CVE Tools
Sign in

CVE-2026-5039

Predictable Default Cryptographic Key Used for DES Encryption in TP-Link TL-WL841N

Published: Apr 23, 2026Updated: May 5, 2026 Sources: CVE List NVD csafCWE-1394
8.8HIGH
NVD MITRE
EPSS Score
0.1%
Top 97.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Multiple TP-Link products (TP-Link Archer C20 V5, Archer C20 6.0, Archer AX53 v1.0 and TL-WR841N v13) are affected by multiple vulnerabilities. The most severe of these vulnerabilities could allow an adjacent, unauthenticated attacker to execute administrative commands.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:AAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:AAttack Vector
Adjacent
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-1394

Affected Products

tl-wr841n firmwaretp-linkNetworking Infrastructure
TL-WL841N v13TP-Link Systems Inc.Networking Infrastructure
tp-linkcommercialTWNetworking Infrastructureaka tp-link, tp link
tp-link systems inc.commercialCNNetworking Infrastructureaka tp-link

Exploitability

Official Patch Available
No detection template yetWe can run the check for you — a free external exposure review, no install. Check my exposure

References

https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-26-119-02.json
raw.githubusercontent.com
https://www.tp-link.com/en/support/download/archer-c20/v6/#Firmware
tp-link.com
https://www.tp-link.com/en/support/download/archer-ax53/v1/#Firmware
tp-link.com
and 8 more references View all →

Timeline

Published
Apr 23, 2026
Last Updated
May 5, 2026

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-5039 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows