Null Pointer Dereference Vulnerability on TL-WR841N
Published Jan 15, 2026
6.3
MEDIUMCVSS 4.0
EPSS 0.50%
Description
A Null Pointer Dereference vulnerability exists in the referer header check of the web portal of TP-Link TL-WR841N v14, caused by improper input validation. A remote, unauthenticated attacker can exploit this flaw and cause Denial of Service on the web portal service.This issue affects TL-WR841N v14: before 250908.
Affected products
-
- Version 0StatusaffectedConstraints<250908
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| TP-Link Systems Inc. | TL-WR841N v14 | unaffected |
|
- < 250908
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
1 other source (NVD) ▾
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/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
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Jan 15, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
Jan–Oct 2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.50% (0.00497) | 40.36th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.43% (0.00428) | 33.96th | v5 (v2026.06.15) |
| Jan 16, 2026 | 0.09% (0.00090) | 25.99th | v4 (v2025.03.14) |
References (4)
- https://www.tp-link.com/en/support/download/tl-wr841n/#Firmware patchProduct
- https://www.tp-link.com/jp/support/download/tl-wr841n/#Firmware patchProduct
- https://www.tp-link.com/us/support/download/tl-wr841n/#Firmware patchProduct
- https://www.tp-link.com/us/support/faq/4894/ vendor-advisoryPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://www.tp-link.com/en/support/download/tl-wr841n/#Firmware | patchProduct | |
| https://www.tp-link.com/jp/support/download/tl-wr841n/#Firmware | patchProduct | |
| https://www.tp-link.com/us/support/download/tl-wr841n/#Firmware | patchProduct | |
| https://www.tp-link.com/us/support/faq/4894/ | vendor-advisoryPatchVendor Advisory |
Change history (0)
No recorded changes yet.