How severe is CVE-2021-38088?

CVE-2021-38088 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-2021-38088 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-38088?

CVE-2021-38088 primarily affects Acronis Cyber Protect. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-38088?

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-2021-38088 published?

CVE-2021-38088 was published on 2021-08-12 and last updated on 2026-06-17.

CVE-2021-38088

CVE-2021-38088 is a high-severity vulnerability in Acronis Cyber Protect 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.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.6
EPSS exploit prediction: 0% (14th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Acronis Cyber Protect
Published: 2021-08-12
Last modified: 2026-06-17

Description

Acronis Cyber Protect 15 for Windows prior to build 27009 allowed local privilege escalation via binary hijacking.

Frequently asked questions

What is CVE-2021-38088?: Acronis Cyber Protect 15 for Windows prior to build 27009 allowed local privilege escalation via binary hijacking.
How severe is CVE-2021-38088?: CVE-2021-38088 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-2021-38088 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-38088?: CVE-2021-38088 primarily affects Acronis Cyber Protect. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-38088?: 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-2021-38088 published?: CVE-2021-38088 was published on 2021-08-12 and last updated on 2026-06-17.

References

https://kb.acronis.com/content/68564

Affected products (3)

cpe:2.3:a:acronis:cyber_protect:*:*:*:*:*:*:*:*
cpe:2.3:a:acronis:cyber_protect:15:-:*:*:*:*:*:*
cpe:2.3:a:acronis:cyber_protect:15:update1:*:*:*:*:*:*

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