CVE-2025-53711Network attack vector

HTTP service crash via unchecked WLAN parameters

Published Jul 29, 2025 · Updated Mar 19, 2026

Buffer overflow in TP-Link TL-WR841N v11, TL-WR842ND v2, and TL-WR949N v3 allows remote authenticated users to crash the HTTP service. The /userRpm/WlanNetworkRpm.htm handler fails to validate WLAN request parameters before copying them into a bounded memory buffer. Highly privileged management access is required, and the resulting service interruption persists until the router is rebooted.

CVSS severity6.9
Medium
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in TP-Link TL-WR841N v11, TL-WR842ND v2, and TL-WR949N v3 allows remote authenticated users to crash the HTTP service. The /userRpm/WlanNetworkRpm.htm handler fails to validate WLAN request parameters before copying them into a bounded memory buffer. Highly privileged management access is required, and the resulting service interruption persists until the router is rebooted.

The record

CVE
CVE-2025-53711
Published
Jul 29, 2025
Updated
Mar 19, 2026
Vendor
TP-Link
Product
TL-WR949N
Classifications
CWE-119, CWE-120, CAPEC-469, T1499.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jul 29, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 19, 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 <=3.18.1 Build 1711151

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

TP-Link · TL-WR949Nversion=0 <=3.18.1 Build 1711151
TP-Link · TL-WR842NDversion=0 <=V2_150514
TP-Link Systems Inc. · TL-WR841Nversion=0 <=160325

Published CVSS scores

6.9TP-LinkCVSS:4.0/AV:N/AC:L/AT:N/PR:H/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CAPEC-469HTTP DoS
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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