CVE-2025-1555Public exploitNetwork attack vector

Unauthenticated dangerous-file upload via unchecked saveImage input

Published Feb 21, 2025 · Updated Feb 24, 2025

Unrestricted file upload in Hzmanyun Education and Training System 3.1.1 allows remote attackers to upload arbitrary files via saveImage. The saveImage function processes the attacker-controlled file argument without restricting uploads to safe file types. No authentication or user interaction is required, and public proof-of-concept material establishes remote reachability; published evidence does not establish code execution.

CVSS severity9.8
Critical
EPSS probability0.70%
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 Hzmanyun Education and Training System 3.1.1 allows remote attackers to upload arbitrary files via saveImage. The saveImage function processes the attacker-controlled file argument without restricting uploads to safe file types. No authentication or user interaction is required, and public proof-of-concept material establishes remote reachability; published evidence does not establish code execution.

The record

CVE
CVE-2025-1555
Published
Feb 21, 2025
Updated
Feb 24, 2025
Vendor
Hzmanyun
Product
Education and Training System
Classifications
CWE-434, CWE-284, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 21, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 24, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Hzmanyun · Education and Training Systemversion=3.1.1

Published CVSS scores

7.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
7.5VulDBAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
6.9VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA: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-434Unrestricted Upload of File with Dangerous Type
CWE-284Improper Access Control
T1190Exploit Public-Facing Application

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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