CVE-2025-26167Public exploitNetwork attack vector

Unauthenticated file read via inter parameter

Published Mar 6, 2025 · Updated Mar 7, 2025

Arbitrary file read in Buffalo LS520D 4.53 allows remote attackers to read internal NAS files through its web interface. The /rpc/cat handler in webaxs_rpc.pyc accepts inter=1, joins the supplied path directly under the filesystem root, and bypasses _virpath2path validation. No authentication or user interaction is required, and exposed files include /etc/shadow and web-interface password hashes.

CVSS severity7.5
High
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file read in Buffalo LS520D 4.53 allows remote attackers to read internal NAS files through its web interface. The /rpc/cat handler in webaxs_rpc.pyc accepts inter=1, joins the supplied path directly under the filesystem root, and bypasses _virpath2path validation. No authentication or user interaction is required, and exposed files include /etc/shadow and web-interface password hashes.

The record

CVE
CVE-2025-26167
Published
Mar 6, 2025
Updated
Mar 7, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-200, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 6, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 7, 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

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A: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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1005Data from Local System

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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