How severe is CVE-2026-28721?

CVE-2026-28721 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-28721 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-28721?

CVE-2026-28721 affects Acronis Cyber Protect. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-28721?

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.

Does CVE-2026-28721 have an EU (EUVD) identifier?

Yes. CVE-2026-28721 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9956.

When was CVE-2026-28721 published?

CVE-2026-28721 was published on 2026-03-06 and last updated on 2026-06-17.

CVE-2026-28721

CVE-2026-28721 is a high-severity vulnerability in Acronis Cyber Protect with a CVSS 3.x base score of 7.3. 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-610.

Key facts

Severity: High (CVSS 3.x base score 7.3)
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9956
Weakness: CWE-610
Affected product: Acronis Cyber Protect
Published: 2026-03-06
Last modified: 2026-06-17

Description

Local privilege escalation due to improper soft link handling. The following products are affected: Acronis Cyber Protect 17 (Windows) before build 41186.

Frequently asked questions

What is CVE-2026-28721?: Local privilege escalation due to improper soft link handling. The following products are affected: Acronis Cyber Protect 17 (Windows) before build 41186.
How severe is CVE-2026-28721?: CVE-2026-28721 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-28721 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-28721?: CVE-2026-28721 affects Acronis Cyber Protect. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-28721?: 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.
Does CVE-2026-28721 have an EU (EUVD) identifier?: Yes. CVE-2026-28721 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9956.
When was CVE-2026-28721 published?: CVE-2026-28721 was published on 2026-03-06 and last updated on 2026-06-17.

References

https://security-advisory.acronis.com/advisories/SEC-8445

Affected products (1)

cpe:2.3:a:acronis:cyber_protect:*:*:*:*:*:*:*:*

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