CVE-2023-26318

Memory corruption via unchecked buffer copy

Published Oct 11, 2023 · Updated Sep 18, 2024

Classic buffer overflow in Xiaomi Router firmware before 2023.2 allows attackers to corrupt memory via unspecified vectors. The public Xiaomi and CVE records do not identify the affected function, buffer, copied input, or missing bounds check beyond the unchecked copy. Xiaomi assigns a local, high-privilege gate, while NVD assesses a network, high-privilege path; neither source specifies whether corruption causes a crash, code execution, or another outcome.

CVSS severity6.7
Medium
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Classic buffer overflow in Xiaomi Router firmware before 2023.2 allows attackers to corrupt memory via unspecified vectors. The public Xiaomi and CVE records do not identify the affected function, buffer, copied input, or missing bounds check beyond the unchecked copy. Xiaomi assigns a local, high-privilege gate, while NVD assesses a network, high-privilege path; neither source specifies whether corruption causes a crash, code execution, or another outcome.

The record

CVE
CVE-2023-26318
Published
Oct 11, 2023
Updated
Sep 18, 2024
Vendor
Xiaomi Corporation
Product
Xiaomi Router Firmware
Classifications
CWE-120
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Oct 11, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 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=0 <fw version before 2023.2
  2. Affected versionversion=0 <fw_version_before_2023.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Xiaomi Corporation · Xiaomi Router Firmwareversion=0 <fw version before 2023.2; version=0 <fw_version_before_2023.2

Published CVSS scores

7.2NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
6.7Xiaomi Technology Co., Ltd.CVSS:3.1/AV:L/AC:L/PR:H/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)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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