CVE-2025-3849Public exploitNetwork attack vector

Authenticated account takeover via trusted studentId

Published Apr 21, 2025 · Updated Apr 22, 2025

Unverified password change in YXJ2018 SpringBoot-Vue-OnlineExam 1.0 allows remote authenticated users to reset student passwords. The /api/studentPWD handler accepts a caller-supplied studentId and updates that account's password without binding the identifier to the logged-in account or verifying the prior password. Any logged-in account can target another student's identifier and then authenticate with the replacement password, resulting in takeover of that student account.

CVSS severity6.5
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unverified password change in YXJ2018 SpringBoot-Vue-OnlineExam 1.0 allows remote authenticated users to reset student passwords. The /api/studentPWD handler accepts a caller-supplied studentId and updates that account's password without binding the identifier to the logged-in account or verifying the prior password. Any logged-in account can target another student's identifier and then authenticate with the replacement password, resulting in takeover of that student account.

The record

CVE
CVE-2025-3849
Published
Apr 21, 2025
Updated
Apr 22, 2025
Vendor
YXJ2018
Product
SpringBoot-Vue-OnlineExam
Classifications
CWE-620, CWE-640, T1098
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 21, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 22, 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=1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

YXJ2018 · SpringBoot-Vue-OnlineExamversion=1.0

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
5.3VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
4.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
4.0VulDBAV:N/AC:L/Au:S/C:N/I:P/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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-620Unverified Password Change
CWE-640Weak Password Recovery Mechanism for Forgotten Password
T1098Account Manipulation

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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