Acronis Cyber Protect 15 for Windows prior to build 27009 and Acronis Agent for Windows…
Priority LOW 34CWE-427Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-427.
Summary
Acronis Cyber Protect 15 for Windows prior to build 27009 and Acronis Agent for Windows prior to build 26226 allowed local privilege escalation via DLL hijacking.
Why it matters now
EPSS 0.00255 17th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:acronis:cyber_protect:*:*:*:*:*:*:*:* | before 15 | Vulnerable | Acronis |
| cpe:2.3:a:acronis:cyber_protect:15:-:*:*:*:*:*:* | 15 | Vulnerable | Acronis |
| cpe:2.3:a:acronis:cyber_protect:15:update1:*:*:*:*:*:* | 15 update1 | Vulnerable | Acronis |
| cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
- cpe:2.3:a:acronis:cyber_protect:*:*:*:*:*:*:*:* Versions before 15 Vulnerable ·Acronis
- cpe:2.3:a:acronis:cyber_protect:15:-:*:*:*:*:*:* Versions 15 Vulnerable ·Acronis
- cpe:2.3:a:acronis:cyber_protect:15:update1:*:*:*:*:*:* Versions 15 update1 Vulnerable ·Acronis
- cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-38086
- 2026-10-03 Alias added: GHSA-4vx8-fj63-v6wv
References
Advisory 1
More Acronis Cyber Protect vulnerabilities
- TI-2022-03146 Improper privilege management in Acronis Cyber Protect 15 CVSS 3.1HIGH 8.8
- TI-2025-21714 Weak authentication in Acronis Cyber Protect 16 CVSS 3.0CRITICAL 10.0
- TI-2025-21713 Weak authentication in Acronis Cyber Protect 16 CVSS 3.0CRITICAL 10.0
- TI-2025-21717 Missing authorization in Acronis Cyber Protect 16 CVSS 3.0CRITICAL 10.0
- TI-2023-23738 Authorization bypass in Acronis Cyber Protect 15 CVSS 3.1CRITICAL 9.1
- TI-2026-22921 Weak authentication in Acronis Cyber Protect 17 CVSS 3.1CRITICAL 9.8
Sources
- CVE-2021-38086 · CVE Program
- CVE-2021-38086 · NVD
- FIRST EPSS
- GHSA-4vx8-fj63-v6wv · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences