How severe is CVE-2020-9450?

CVE-2020-9450 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-9450 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-9450?

CVE-2020-9450 affects Acronis True Image 2020. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-9450?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-9450 published?

CVE-2020-9450 was published on 2021-05-25 and last updated on 2026-06-17.

CVE-2020-9450

CVE-2020-9450 is a high-severity vulnerability in Acronis True Image 2020 with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-276.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.6
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-276
Affected product: Acronis True Image 2020
Published: 2021-05-25
Last modified: 2026-06-17

Description

An issue was discovered in Acronis True Image 2020 24.5.22510. anti_ransomware_service.exe exposes a REST API that can be used by everyone, even unprivileged users. This API is used to communicate from the GUI to anti_ransomware_service.exe. This can be exploited to add an arbitrary malicious executable to the whitelist, or even exclude an entire drive from being monitored by anti_ransomware_service.exe.

Frequently asked questions

What is CVE-2020-9450?: An issue was discovered in Acronis True Image 2020 24.5.22510. anti_ransomware_service.exe exposes a REST API that can be used by everyone, even unprivileged users. This API is used to communicate from the GUI to anti_ransomware_service.exe. This can be exploited to add an arbitrary malicious executable to the whitelist, or even exclude an entire drive from being monitored by anti_ransomware_service.exe.
How severe is CVE-2020-9450?: CVE-2020-9450 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-9450 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-9450?: CVE-2020-9450 affects Acronis True Image 2020. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-9450?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-9450 published?: CVE-2020-9450 was published on 2021-05-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:acronis:true_image_2020:24.5.22510:*:*:*:*:*:*:*

More vulnerabilities in Acronis True Image 2020

CVE-2020-9452 — High (CVSS 7.8): An issue was discovered in Acronis True Image 2020 24.5.22510. anti_ransomware_service.exe includes functionality to…
CVE-2020-9451 — Medium (CVSS 5.5): An issue was discovered in Acronis True Image 2020 24.5.22510. anti_ransomware_service.exe keeps a log in a folder…

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