Vulnerability details
CVE-2026-3622
TP-Link Systems TL-WR841N v14
Denial-of-Service Vulnerability in UPnP Component of TP Link's TL-WR841N
CVSS 4.0
7.1High
Official description
The vulnerability exists in the UPnP component of TL-WR841N v14, where improper input validation leads to an out-of-bounds read, potentially causing a crash of the UPnP service. Successful exploitation can cause the UPnP service to crash, resulting in a Denial-of-Service condition. This vulnerability affects TL-WR841N v14 < EN_0.9.1 4.19 Build 260303 Rel.42399n (V14_260303) and < US_0.9.1.4.19 Build 260312 Rel. 49108n (V14_0304).
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.1High | 4.0 | CVEProject cvelistV5 (CNA) (TPLink) | CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| TP-Link Systems Inc. | TL-WR841N v14 | v < 0.9.1 4.19 | CVEProject cvelistV5 (CNA) |
References and advisories
3
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Details
- Published
- 2026-03-27
- Last updated
- 2026-03-27
- State
- Published
- Assigner (CNA)
- TPLink
Exploit prediction (EPSS)
0.37%
Probability of exploitation in 30 days
31.3%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-125Out-of-bounds read