Security readout for executives and security teams
Plain-English summary
This CVE describes a self-XSS issue on the devices page of Acronis Cyber Protect 15. A user could cause script execution in their own browser session. The public record only names affected builds before 28035 and does not provide severity scoring or exploitation evidence.
Executive priority
Treat this as a low-priority hygiene fix unless untrusted users can access the Acronis console. Prioritize upgrade during normal maintenance, but move faster for internet-reachable or broadly accessible management interfaces.
Technical view
CVE-2021-44200 is a CWE-79 self cross-site scripting flaw affecting Acronis Cyber Protect 15 on Windows and Linux before build 28035. The available sources do not describe the exact input vector, privilege requirements, persistence, or impact beyond the devices page.
Likely exposure
Exposure is limited to organizations running Acronis Cyber Protect 15 Windows or Linux builds earlier than 28035. Public sources do not identify cloud exposure, default exposure, or affected versions beyond that build boundary.
Exploitation context
The source bundle does not report active exploitation, and the CVE is not listed as KEV. Self-XSS usually requires user interaction in an authenticated browser context, so business risk depends on who can access the devices page and what privileges their session carries.
Researcher notes
Public evidence is sparse. The CVE names CWE-79, self-XSS, the devices page, and Acronis Cyber Protect 15 before build 28035. It does not provide CVSS, detailed attack preconditions, payload behavior, or proof of exploitation.
Mitigation direction
- Upgrade Acronis Cyber Protect 15 to build 28035 or later.
- Review Acronis advisory SEC-2803 for vendor-specific remediation details.
- Restrict administrative console access to trusted users and networks.
- Monitor vendor guidance for any revised severity or affected-version details.
Validation and detection
- Inventory Acronis Cyber Protect 15 Windows and Linux deployments.
- Confirm each deployment build number is 28035 or later.
- Verify who can access the devices page in the management console.
- Check security records for any unexpected script-related console behavior.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2021-44200 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://security-advisory.acronis.com/advisories/SEC-2803CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.