CVE-2026-87879: Acronis Cyber Protect information disclosure in token validation
CVE-2026-87879 · Severity: medium · CVSS 5.9 · Published 2026-10-28
Acronis Cyber Protect is backup and recovery software for enterprise systems. A flaw in how the software validates authentication tokens allows an attacker to disclose sensitive information, potentially exposing backup data or system credentials to unauthorized access.
No. Junglewise Threat Intelligence has no report of CVE-2026-87879 being exploited in the wild.
How severe is CVE-2026-87879?
Medium severity, with a CVSS score of 5.9, published 28 October 2026.
Which products and versions are affected?
Acronis Cyber Protect 17 before build 42587 (Linux, Windows).
Is there a fix for CVE-2026-87879?
Yes: fixed in Cyber Protect 17 build 42587 and later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-87879 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-87879?
Check whether you run Acronis Cyber Protect at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
Fixed in: Cyber Protect 17 build 42587 and later
Affected products
Acronis Cyber Protect 17 before build 42587 (Linux, Windows)