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Fencer Vulns
high 7.5

CVE-2026-8619 json

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

published 2026-08-19 2 mo ago modified 2026-10-27 12 d ago also EUVD-2026-63168

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 59%
public exploits
0
none known

Summary

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.

Patch / fix

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

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 mo ago

Exploit prediction

0.87% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 7.1 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
CNA 4.0 7.1 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • TP-Link Systems Inc. TL-MR100 v3.2
  • TP-Link Systems Inc. TL-MR150 v.3.2
  • TP-Link Systems Inc. TL-MR6400 v8.0
  • TP-Link Systems Inc Archer MR600 v2

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.