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CVE-2025-9578VulnerabilityPublished Updated

CVE-2025-9578: Acronis Cyber Protect Cloud Agent · Incorrect Permissions

Affects Acronis Cyber Protect Cloud AgentSource CVE Database V5

0

Not known to be exploited · CVSS 7.8 High : upgrade to 40734 soon.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.0 base score
7.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 2% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 40734
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 28 Aug 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

What to do

Upgrade Acronis Cyber Protect Cloud Agent to 40734.

Affected software

ProductAffectedFixed in
Acronis Acronis Cyber Protect Cloud AgentAffected
  • <40734
Fixed in
  • 40734

AI-suggested

To mitigate CVE-2025-9578, organizations should take the following specific actions: 1) Monitor Acronis communications and promptly apply updates or patches once a fixed build beyond 40734 is released. 2) In the interim, audit and harden folder and file permissions related to the Acronis Cyber Protect Cloud Agent installation directories to ensure that only trusted system accounts and administrators have write access, preventing unauthorized modification. 3) Restrict local user permissions and employ the principle of least privilege to limit the number of users who can log in locally or execute code on systems running the agent. 4) Implement endpoint detection and response (EDR) solutions to monitor for suspicious local privilege escalation attempts and anomalous file system changes within Acronis directories. 5) Conduct regular security awareness training to reduce insider threat risks and ensure users understand the importance of safeguarding privileged access. 6) Consider isolating backup agents on dedicated systems or virtual machines with strict access controls to reduce exposure. 7) Maintain comprehensive logging and auditing of local privilege escalations and file permission changes to enable rapid detection and response. These measures, combined with timely patching, will reduce the risk posed by this vulnerability.

Description

Local privilege escalation due to insecure folder permissions. The following products are affected: Acronis Cyber Protect Cloud Agent (Windows) before build 40734.

References

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