CVE-2026-8619

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

HIGH
7.5
CVSS Score
Published: August 19, 2026 at 11:11 PM UTC
Updated: September 3, 2026 at 03:24 PM UTC
9 products affected across 1 vendorArcher MR600 FirmwareTl MR6400 FirmwareTl MR100 Firmware

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Severity
HIGH7.5
Exploit prediction
EPSS 0.9%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.10.0
Affected range stops below 1.10.0, so it looks safe — our inference, not a vendor statement
tp-link-archer-mr600 (same device)
v < 1.3.0
Affected range stops below 1.3.0, so it looks safe — our inference, not a vendor statement
tp-link-tl-mr100 (same device)
v < 1.3.0
Affected range stops below 1.3.0, so it looks safe — our inference, not a vendor statement
tp-link-tl-mr150 (same device)
v < 1.5.0
Affected range stops below 1.5.0, so it looks safe — our inference, not a vendor statement
tp-link-tl-mr6400 (same device)
v < Archer MR600(EU)_V2_1.10.0 Build 260618
Affected range stops below Archer MR600(EU)_V2_1.10.0 Build 260618, so it looks safe — our inference, not a vendor statement
v < TL-MR6400(EN)_V8_1.5.0 Build 260610 Rel.67978n
Affected range stops below TL-MR6400(EN)_V8_1.5.0 Build 260610 Rel.67978n, so it looks safe — our inference, not a vendor statement
v < TL-MR100(EU)_V3.20_1.3.0 Build 260609 Rel.49957n
Affected range stops below TL-MR100(EU)_V3.20_1.3.0 Build 260609 Rel.49957n, so it looks safe — our inference, not a vendor statement
v < TL-MR150(EU)_V3.20_1.3.0 Build 260720 Rel.59727n
Affected range stops below TL-MR150(EU)_V3.20_1.3.0 Build 260720 Rel.59727n, so it looks safe — our inference, not a vendor statement
All versions

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-476

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