CVE-2020-35556 Misconfiguration in n/a

What is CVE-2020-35556?

CVE-2020-35556 is a high-severity vulnerability in Acronis Cyber Protect, published on 22 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in Acronis Cyber Protect before 15 Update 1 build 26172. Because the local notification service misconfigures CORS, information disclosure can occur.

Which versions are affected by CVE-2020-35556?

It affects 1 product.

Products include Acronis Cyber Protect.

How do I fix CVE-2020-35556?

No fix has been published for CVE-2020-35556 yet. Limit exposure of the affected software until one is available.

Is CVE-2020-35556 being exploited?

There is no known exploitation of CVE-2020-35556 in the wild and no public exploit code.

Other vulnerabilities in Acronis Cyber Protect

• CVE-2025-30411 Auth bypass in Acronis Cyber Protect 15 Critical 10.0
• CVE-2025-30412 Auth bypass in Acronis Cyber Protect 15 Critical 10.0
• CVE-2025-30416 Missing authorization in Acronis Cyber Protect 15 Critical 10.0
• CVE-2026-28710 Auth bypass in Acronis Cyber Protect 17 High 8.1
• CVE-2021-44198 DLL hijacking could lead to local privilege escalation High 7.8

All Acronis Cyber Protect vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-w8ww-rjx9-2r6h.