NULL pointer dereference in TP-Link Archer Mr600 Firmware

CVE-2026-8619

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.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.009 (57.5th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 57.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-8619: held from 0.004 to 0.009.

EPSS over last 30 days · oldest: 0.004 · newest: 0.009 · change: +0.004

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-8619?
CVE-2026-8619 is a high-severity vulnerability in TP-Link Archer Mr600 Firmware, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2026-08-20.
How severe is CVE-2026-8619?
High severity. CVSS v3 base score is 7.5 out of 10.