CVE-2026-8619

HTTP service crash via NULL dereference

Published Aug 19, 2026 · Updated Aug 20, 2026

Denial of service in TP-Link TL-MR100 3.2, TL-MR150 3.2, TL-MR6400 8.0, and Archer MR600 2 allows adjacent attackers to crash the HTTP service. The HTTP service mishandles exceptional HTTP request conditions and dereferences a NULL pointer, so a crafted request terminates the management process. Attackers need only adjacent-network reachability to the web interface; the result is temporary loss of the web management interface and other HTTP-dependent functions, with no published evidence of data access or code execution.

CVSS severity7.1
High
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in TP-Link TL-MR100 3.2, TL-MR150 3.2, TL-MR6400 8.0, and Archer MR600 2 allows adjacent attackers to crash the HTTP service. The HTTP service mishandles exceptional HTTP request conditions and dereferences a NULL pointer, so a crafted request terminates the management process. Attackers need only adjacent-network reachability to the web interface; the result is temporary loss of the web management interface and other HTTP-dependent functions, with no published evidence of data access or code execution.

The record

CVE
CVE-2026-8619
Published
Aug 19, 2026
Updated
Aug 20, 2026
Vendor
TP-Link Systems Inc.
Product
TL-MR100
Classifications
CWE-476, CAPEC-125, T1499
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <TL-MR100(EU)_V3.20_1.3.0 Build 260609 Rel.49957n

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

TP-Link Systems Inc. · TL-MR100version=0 <TL-MR100(EU)_V3.20_1.3.0 Build 260609 Rel.49957n
TP-Link Systems Inc. · TL-MR6400version=0 <TL-MR6400(EN)_V8_1.5.0 Build 260610 Rel.67978n
TP-Link Systems Inc. · TL-MR150version=0 <TL-MR150(EU)_V3.20_1.3.0 Build 260720 Rel.59727n
TP-Link Systems Inc. · Archer MR600version=0 <Archer MR600(EU)_V2_1.10.0 Build 260618

Published CVSS scores

7.1TPLinkCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
CAPEC-125Flooding
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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