CVE-2021-24697Public exploitNetwork attack vector

Script execution via unescaped statistics parameters

Published Nov 8, 2021 · Updated Aug 3, 2024

Reflected XSS in Simple Download Monitor before 3.9.5 allows remote attackers to execute injected script in an administrator's browser. The statistics page writes the sdm_active_tab GET value and sdm_stats_start_date or sdm_stats_end_date POST values into HTML attributes without escaping. An authenticated administrator must load the crafted statistics request; the injected script then runs with that administrator's browser privileges.

CVSS severity6.1
Medium
EPSS probability0.83%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Reflected XSS in Simple Download Monitor before 3.9.5 allows remote attackers to execute injected script in an administrator's browser. The statistics page writes the sdm_active_tab GET value and sdm_stats_start_date or sdm_stats_end_date POST values into HTML attributes without escaping. An authenticated administrator must load the crafted statistics request; the injected script then runs with that administrator's browser privileges.

The record

CVE
CVE-2021-24697
Published
Nov 8, 2021
Updated
Aug 3, 2024
Vendor
Tips and Tricks HQ
Product
Simple Download Monitor
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=3.9.5 <3.9.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Tips and Tricks HQ · Simple Download Monitorversion=3.9.5 <3.9.5

Published CVSS scores

6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.3NVDAV:N/AC:M/Au:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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 exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo