Vulnerability · Published Aug 19, 2026 · Assigned by TPLink

CVE-2026-8619Unauthenticated Denial-of-Service Vulnerability in HTTP Service in TP-Link TL-MR100, TL-MR150, TL-MR6400 and Archer MR600

High 7.1

In plain English

A high-severity null pointer dereference in Archer MR600 v2 from TP-Link Systems Inc. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 59% of all known vulnerabilities).

Severity (CVSS 4.0)7.1High

Exploit odds (30 days)0.9%top 40.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

An unauthenticated denial-of-service vulnerability was identified in TP-Link TL-MR100 v3.2, TL-MR150 v3.2, TL-MR6400 v8.0 and Archer MR600 v2, due to improper handling of exceptional request conditions that may lead to a NULL pointer dereference. A remote attacker on an adjacent network can send a specially crated HTTP request to trigger a crash of the HTTP service process. Successful exploitation may cause the HTTP service to crash, making the web management interface and HTTP-dependent functionality temporarily unavailable.

Affected products (as reported)

Vendor	Product	Versions
TP-Link Systems Inc.	TL-MR100 v3.2	0 – before TL-MR100(EU)_V3.20_1.3.0 Build 260609 Rel.49957n
TP-Link Systems Inc.	TL-MR150 v.3.2	0 – before TL-MR150(EU)_V3.20_1.3.0 Build 260720 Rel.59727n
TP-Link Systems Inc.	TL-MR6400 v8.0	0 – before TL-MR6400(EN)_V8_1.5.0 Build 260610 Rel.67978n
TP-Link Systems Inc	Archer MR600 v2	0 – before Archer MR600(EU)_V2_1.10.0 Build 260618

Weakness: CWE-476 · Vector: 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

In plain English

Official description

Affected products (as reported)

References