TP-Link TL-WR841N
CVE-2023-50224
TP-Link TL-WR841N contains an authentication bypass by spoofing vulnerability within the httpd service, which listens on TCP port 80 by default, leading to the disclose of stored credentials. The impacted products could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization.
What this means for your business
- It affects TP-Link TL-WR841N. It matters if your company, or a supplier that handles your data, runs it.
- Attackers are already using it. CISA added it to its list of flaws used in real attacks on 3 September 2025.
- An attacker can use it from inside the same network, without a login, and without anyone at your company clicking anything.
- FIRST's prediction model gives it a 16% chance of attack attempts being seen in the next 30 days, ranking above 96% of all known flaws.
What to do
- 1Check whether your company or your suppliers run TP-Link TL-WR841N, and which version. The affected versions are listed further down this page.
- 2If you do, apply the vendor's fix. A patch or vendor advisory has been published.
- 3Treat it as urgent. US federal agencies must fix it by 24 September 2025. That deadline does not apply to private companies, but it shows how seriously CISA takes it.
- 4Because attackers have used it, check the affected systems for signs of a break-in, not only for the update.
Not sure if your company is exposed?
Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.
Required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA’s wording, unedited.
Scoring
- CVSS
- 6.5 (v3.1)
- Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N- Weakness
- CWE-290
- Assigned by
- zdi-disclosures@trendmicro.com
Dates
- Published
- 2025-09-03
- Last modified
- 2026-09-03
- Added to KEV
- 2025-09-03
- Remediation due
- 2025-09-24
- Sources
- CISA KEV, NVD
Affected products
- Tp-Link Tl-Wr841n Firmwareall versions, 11_150616 - 11_211209, 12_160624 - 12_230317
- Tp-Link Tl-Wr841n8.0, 9, 10, 11, 12
- Tp-Link Mr6400 Firmwareall versions
- Tp-Link Mr64001.0, 2.0
- Tp-Link Tl-Wdr3600 Firmwareall versions
- Tp-Link Tl-Wdr36002.0
- Tp-Link Tl-Wdr4300 Firmwareall versions
- Tp-Link Tl-Wdr43001
- Tp-Link Wdr3500 Firmwareall versions
- Tp-Link Wdr35002.0
- Tp-Link Tl-Wr710n Firmwareall versions
- Tp-Link Tl-Wr710n1.0, 2.0
As listed in the NVD configuration data. Not a statement about your estate.