CVE-2021-24830Network attack vector

Stored script execution via unescaped settings output

Published Nov 23, 2021 · Updated Aug 3, 2024

Stored XSS in Advanced Access Manager before 6.8.0 allows remote authenticated users to run script in an administrator's browser. The settings views insert stored configuration values into administrative HTML without output escaping. A high-privilege account lacking unfiltered_html must save a crafted setting, and another user must view the affected output, enabling browser-context data access or actions.

CVSS severity4.8
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

Stored XSS in Advanced Access Manager before 6.8.0 allows remote authenticated users to run script in an administrator's browser. The settings views insert stored configuration values into administrative HTML without output escaping. A high-privilege account lacking unfiltered_html must save a crafted setting, and another user must view the affected output, enabling browser-context data access or actions.

The record

CVE
CVE-2021-24830
Published
Nov 23, 2021
Updated
Aug 3, 2024
Vendor
VasylTech LLC
Product
Advanced Access Manager
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Nov 23, 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=6.8.0 <6.8.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

VasylTech LLC · Advanced Access Managerversion=6.8.0 <6.8.0

Published CVSS scores

3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/A:N
4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/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.

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

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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