CVE-2026-5039
Predictable Default Cryptographic Key Used for DES Encryption in TP-Link TL-WL841N
No known exploitation. EPSS puts it in the 3rd percentile. Fixed versions are out.
No public exploit knownFix2 products2 fixed builds listed below
No ready-made check. Neither Nuclei nor OpenVAS has one for this CVE yet.
What to do
Find your product and version, then upgrade to the build on the right.
- TP-Link Systems Inc. TL-WL841N v13Affected: < 0.9.1 Build 20231120 Rel.62366Upgrade to: 0.9.1 Build 20231120 Rel.62366Stated by: CVE record
- Tp-link Tl-wr841n FirmwareAffected: < 231120Upgrade to: 231120Stated by: NVD
Versions as the sources state them. Full version matrix after sign-in
What it is
From the CVE record
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.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
0.1% chance of exploitation activity in the next 30 days, which ranks it in the 3rd percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
6 events over 185 days, from the signal feeds we watch.
- Patch availablerecord updated
- Patch availablerecord updated
- Publishedweakness classified
Affected products
Technical detail
CVSS 3.1 vector
Open in the CVSS calculatorCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Scored 8.8 by NVD.
How it is reached
- Attack Vector AdjacentRequires access to the local network (e.g. same Wi-Fi, Bluetooth)
- Attack Complexity LowNo special conditions — the attack can be reliably reproduced
- Privileges Required NoneNo authentication required — anyone can exploit this
- User Interaction NoneNo user interaction needed — fully automated exploitation
Scope
- Scope UnchangedImpact is limited to the vulnerable component itself
Impact if exploited
- Confidentiality HighTotal information disclosure — all data in the component is compromised
- Integrity HighTotal loss of integrity — attacker can modify any data in the component
- Availability HighTotal denial of service — the component is completely unavailable
Weaknesses
Sources
Watch the software you run.
My Stack ranks new CVEs for your products by real-world exploitation, so the next serious one reaches you without reading every advisory.
We'll flag the next CVE, public exploit or patch for TL-WL841N v13, not every advisory.
A free account adds
- The full version matrix and every affected product
- Exploit links, proofs of concept and Metasploit modules
- Email alerts for the products you watch
- The same data over REST API, MCP and CLI