CVE-2021-44200Network attack vector

Browser-context script execution on Devices page

Published Nov 29, 2021 · Updated Sep 16, 2024

Cross-site scripting on the Devices page in Acronis Cyber Protect 15 before build 28035 allows remote authenticated users to execute browser script. Acronis identifies the affected page but has not disclosed the input field, rendering sink, or exact neutralization failure that permits the self-XSS. Exploitation requires console access and user interaction; consequences are limited to browser-context data exposure or modification, with no reported service interruption.

CVSS severity5.4
Medium
EPSS probability0.45%
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

Cross-site scripting on the Devices page in Acronis Cyber Protect 15 before build 28035 allows remote authenticated users to execute browser script. Acronis identifies the affected page but has not disclosed the input field, rendering sink, or exact neutralization failure that permits the self-XSS. Exploitation requires console access and user interaction; consequences are limited to browser-context data exposure or modification, with no reported service interruption.

The record

CVE
CVE-2021-44200
Published
Nov 29, 2021
Updated
Sep 16, 2024
Vendor
Acronis
Product
Acronis Cyber Protect 15
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 29, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=unspecified <28035

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Acronis · Acronis Cyber Protect 15version=unspecified <28035

Published CVSS scores

3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/A:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

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

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