CVE-2023-46538

Device compromise via chkResetVeriRegister stack overflow

Published Oct 25, 2023 · Updated Sep 11, 2024

Stack overflow in TP-Link TL-WR886N Firmware 7.0_3.0.14_Build_221115_Rel.56908n allows remote attackers to corrupt memory. The chkResetVeriRegister function writes beyond a stack buffer when it processes crafted input; public records do not identify the input field or request path. The router must be reachable from an adjacent network, no authentication or user interaction is required, and the resulting corruption can interrupt service or compromise the device.

CVSS severity9.8
Critical
EPSS probability1.03%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack overflow in TP-Link TL-WR886N Firmware 7.0_3.0.14_Build_221115_Rel.56908n allows remote attackers to corrupt memory. The chkResetVeriRegister function writes beyond a stack buffer when it processes crafted input; public records do not identify the input field or request path. The router must be reachable from an adjacent network, no authentication or user interaction is required, and the resulting corruption can interrupt service or compromise the device.

The record

CVE
CVE-2023-46538
Published
Oct 25, 2023
Updated
Sep 11, 2024
Vendor
TP-Link
Product
TL-WR886N Firmware
Classifications
CWE-787, T1499
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 25, 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=7.0_3.0.14_Build_221115_Rel.56908n

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

TP-Link · TL-WR886N Firmwareversion=7.0_3.0.14_Build_221115_Rel.56908n

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8NIST NVDCVSS: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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
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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