CVE-2015-10033Network attack vector

Cross-course grade modification via unscoped record ID

Published Jan 9, 2023 · Updated Aug 6, 2024

Improper authorization in the Grade Handler in jvvlee MerlinsBoard allows remote authenticated users to alter grades in other courses. The grade update path accepts a supplied grade identifier without verifying that the record belongs to a course administered by the requester. Course-administrator access and knowledge of another grade's ID are required, enabling unauthorized grade changes outside that administrator's classes.

CVSS severity6.5
Medium
EPSS probability0.73%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in the Grade Handler in jvvlee MerlinsBoard allows remote authenticated users to alter grades in other courses. The grade update path accepts a supplied grade identifier without verifying that the record belongs to a course administered by the requester. Course-administrator access and knowledge of another grade's ID are required, enabling unauthorized grade changes outside that administrator's classes.

The record

CVE
CVE-2015-10033
Published
Jan 9, 2023
Updated
Aug 6, 2024
Vendor
jvvlee
Product
MerlinsBoard
Classifications
CWE-285, CWE-863, T1565.002
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jan 9, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

jvvlee · MerlinsBoardversion=n/a

Published CVSS scores

3.7VulDBAV:A/AC:L/Au:M/C:N/I:P/A:P
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
3.5VulDBCVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L
3.5VulDBCVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:U/C:N/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-285Improper Authorization
CWE-863Incorrect Authorization
T1565.002Transmitted Data Manipulation

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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