CVE-2026-17252Unauthenticated Denial of Service via Composed HTTP Parsing and Stack-Based Out-of-Bounds Write Vulnerability in TL-MR6400 Web Management Interface
Updated under an hour ago ()
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It affects TP-Link Systems Inc. TL-MR6400 v7.0. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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A stack-based out-of-bounds write vulnerability exists in the login request handling functionality of the administrative web interface of TP-Link TL-MR6400 v7 routers. An unauthenticated adjacent attacker can trigger the vulnerability by sending a specially crafted malformed HTTP request. Successful exploitation may cause the web service process to crash, resulting in a denial-of-service condition and temporary loss of access to the router's web management interface.
- CVSS
- 7.1 HIGH (v4.0, CNA)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
- Weakness (CWE)
- CWE-787
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- TPLink
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 3, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
TP-Link Systems Inc. TL-MR6400 v7.0 tp_link_systems:tl_mr6400_v7.0 (from the name) | before 1.9.0 Build 260714 | CNA record |
References
- https://www.tp-link.com/en/support/download/tl-mr6400/v7/#Firmwarepatch
- https://www.tp-link.com/tw/support/download/tl-mr6400/v7/#Firmwarepatch
- https://www.tp-link.com/us/support/faq/5259/vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.