CVE-2023-51073Public exploitNetwork attack vector

Root code execution via unverified firmware source

Published Jan 11, 2024 · Updated Jun 6, 2025

Improper update-source verification in Buffalo LS210D 1.78-0.03 allows man-in-the-middle attackers to execute arbitrary code as root. The update_notifications.sh workflow retrieves update metadata and an unencrypted firmware archive over HTTP without authenticating the source. An attacker controlling the appliance's upstream network or DNS can substitute a higher-version archive, causing the device to install modified firmware and run attacker code with root privileges.

CVSS severity8.1
High
EPSS probability1.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper update-source verification in Buffalo LS210D 1.78-0.03 allows man-in-the-middle attackers to execute arbitrary code as root. The update_notifications.sh workflow retrieves update metadata and an unencrypted firmware archive over HTTP without authenticating the source. An attacker controlling the appliance's upstream network or DNS can substitute a higher-version archive, causing the device to install modified firmware and run attacker code with root privileges.

The record

CVE
CVE-2023-51073
Published
Jan 11, 2024
Updated
Jun 6, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 11, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 6, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.1CISA-ADPCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
8.1NVDCVSS:3.1/AV:N/AC:H/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

T1557Adversary-in-the-Middle

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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