CVE-2021-24698Public exploitNetwork attack vector

Thumbnail removal via unchecked download identifier

Published Nov 8, 2021 · Updated Aug 3, 2024

Improper access control in Simple Download Monitor before 3.9.6 allows remote authenticated users to remove another owner's thumbnail. The sdm_remove_thumbnail_image AJAX action accepts an attacker-controlled post_id_del value and removes the associated thumbnail without verifying ownership or edit permission. Contributor-level access is sufficient, and the demonstrated consequence is unauthorized modification of another user's download metadata.

CVSS severity4.3
Medium
EPSS probability0.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Simple Download Monitor before 3.9.6 allows remote authenticated users to remove another owner's thumbnail. The sdm_remove_thumbnail_image AJAX action accepts an attacker-controlled post_id_del value and removes the associated thumbnail without verifying ownership or edit permission. Contributor-level access is sufficient, and the demonstrated consequence is unauthorized modification of another user's download metadata.

The record

CVE
CVE-2021-24698
Published
Nov 8, 2021
Updated
Aug 3, 2024
Vendor
Tips and Tricks HQ
Product
Simple Download Monitor
Classifications
CWE-284, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 8, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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?

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

  1. Affected versionversion=3.9.6 <3.9.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Tips and Tricks HQ · Simple Download Monitorversion=3.9.6 <3.9.6

Published CVSS scores

4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/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-284Improper Access Control
T1565.001Stored Data 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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