CVE-2025-28026Public exploitNetwork attack vector

Unauthenticated memory corruption via downloadFile.cgi overflow

Published Apr 22, 2025 · Updated Apr 23, 2025

Stack-based buffer overflow in downloadFile.cgi in TOTOLINK router firmware allows remote attackers to cause unspecified impact via crafted requests. The public disclosure does not identify the request parameter, destination stack buffer, or unchecked copy operation that triggers the overwrite. No authentication or user interaction is required, but the demonstrated consequence and reliable post-overflow control are not documented.

CVSS severity7.3
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

Stack-based buffer overflow in downloadFile.cgi in TOTOLINK router firmware allows remote attackers to cause unspecified impact via crafted requests. The public disclosure does not identify the request parameter, destination stack buffer, or unchecked copy operation that triggers the overwrite. No authentication or user interaction is required, but the demonstrated consequence and reliable post-overflow control are not documented.

The record

CVE
CVE-2025-28026
Published
Apr 22, 2025
Updated
Apr 23, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-121
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 22, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 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

7.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow

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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