CVE-2025-25524

Command execution via unchecked filtering-rule copy

Published Feb 11, 2025 · Updated Feb 13, 2025

Buffer overflow in TOTOLINK X6000R firmware 9.4.0cu.652_B20230116 allows local users to crash the router or execute commands. The Wi-Fi filtering-rule addition path copies rule data into a buffer without verifying that the input fits, but public sources do not name the function or parameter. CISA assesses that local access is required but prior privileges and user interaction are not; successful exploitation can crash the router or execute arbitrary commands.

CVSS severity5.1
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in TOTOLINK X6000R firmware 9.4.0cu.652_B20230116 allows local users to crash the router or execute commands. The Wi-Fi filtering-rule addition path copies rule data into a buffer without verifying that the input fits, but public sources do not name the function or parameter. CISA assesses that local access is required but prior privileges and user interaction are not; successful exploitation can crash the router or execute arbitrary commands.

The record

CVE
CVE-2025-25524
Published
Feb 11, 2025
Updated
Feb 13, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-120
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 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 vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.1CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
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.

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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