CVE-2023-46371Public exploitNetwork attack vector

Router crash via oversized upgrade metadata URL

Published Oct 24, 2023 · Updated Sep 11, 2024

A stack overflow in TP-Link TL-WDR7660 2.0.30 and TL-WR886N 2.0.12 allows remote attackers to crash the router through its web interface. The upgradeInfoJsonToBin function fails to bound a cloud_config.upgrade_info.release_log_url value supplied in a JSON POST before placing it in stack storage. The PoC includes a management-session token, although the published CVSS assessment classifies exploitation as unauthenticated and network-reachable.

CVSS severity9.8
Critical
EPSS probability1.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A stack overflow in TP-Link TL-WDR7660 2.0.30 and TL-WR886N 2.0.12 allows remote attackers to crash the router through its web interface. The upgradeInfoJsonToBin function fails to bound a cloud_config.upgrade_info.release_log_url value supplied in a JSON POST before placing it in stack storage. The PoC includes a management-session token, although the published CVSS assessment classifies exploitation as unauthenticated and network-reachable.

The record

CVE
CVE-2023-46371
Published
Oct 24, 2023
Updated
Sep 11, 2024
Vendor
TP-Link
Product
TL-WR886N Firmware
Classifications
CWE-787, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 24, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 11, 2024Record 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=2.0.12

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

TP-Link · TL-WR886N Firmwareversion=2.0.12
TP-Link · TL-WDR7660 Firmwareversion=2.0.30

Published CVSS scores

9.8INCIBE-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1499.004Application or System Exploitation

Public exploit references

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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