CVE-2025-66802Network attack vector

Unauthenticated RCE via executable image upload

Published Jan 12, 2026 · Updated Jan 12, 2026

Unrestricted file upload in Sourcecodester Covid-19 Contact Tracing System 1.0 allows remote attackers to execute arbitrary server-side code. The image upload handler accepts executable extensions without server-side file-type, extension, or content validation, leaving an uploaded PHP payload executable by the web server. No authentication or user interaction is required; execution uses the web server process's privileges and permits data access, modification, or service interruption.

CVSS severity9.8
Critical
EPSS probability0.90%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in Sourcecodester Covid-19 Contact Tracing System 1.0 allows remote attackers to execute arbitrary server-side code. The image upload handler accepts executable extensions without server-side file-type, extension, or content validation, leaving an uploaded PHP payload executable by the web server. No authentication or user interaction is required; execution uses the web server process's privileges and permits data access, modification, or service interruption.

The record

CVE
CVE-2025-66802
Published
Jan 12, 2026
Updated
Jan 12, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-434, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 12, 2026Record 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

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/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.

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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 exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application

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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