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TI-2026-81803 Aliases CVE-2026-87102GHSA-rq2c-9v6f-jv53

Acronis Cyber Protect 17 token validation disclosure and manipulation

Priority LOW 34CWE-347Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.0 · CNA. Fix status from CNA. Impact type from CWE-347.

Summary

Acronis Cyber Protect 17 on Linux and Windows is affected before build 42587. Improper verification of a cryptographic signature (CWE-347) lets token validation accept data it should reject, which exposes sensitive information and allows it to be manipulated. The source description does not state what an attacker must have beforehand, and the CVSS vector indicates a network attacker needs no privileges or user interaction.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Sensitive information disclosure and manipulation due to improper token validation. The following products are affected: Acronis Cyber Protect 17 (Linux, Windows) before build 42587.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00224 13th percentileScored 2026-11-07
Fix Fixed Acronis Cyber Protect 17 (Acronis): 42587

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AcronisAcronis Cyber Protect 17before 4258742587Patch availableCNA
  • Acronis Cyber Protect 17 VendorAcronis Affected before 42587 Fixed in 42587 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:acronis:cyber_protect:*:*:*:*:*:*:*:*——Acronis
  • cpe:2.3:a:acronis:cyber_protect:*:*:*:*:*:*:*:* Versions — — ·Acronis

Remediation

Update Acronis Cyber Protect 17 to build 42587 or later.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA Acronis Cyber Protect 17 (Acronis) Fixed in 42587

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Acronis Cyber Protect 17 42587

    11 records Highest priority Priority LOW 11 LOW

    Other records, highest priority first

    • TI-2026-81804 Token validation flaw in Acronis Cyber Protect 17 exposes dataPriority LOW 34
    • TI-2025-43981 Local privilege escalation in Acronis Cyber Protect productsPriority LOW 33
    • TI-2026-81807 Acronis Cyber Protect 17 lacks SSL certificate checks, leaking dataPriority LOW 31
    Show all 11 records →

Timeline

  1. 2026-10-28 Threatist record created from CVE-2026-87102
  2. 2026-10-28 Alias added: GHSA-rq2c-9v6f-jv53
  3. 2026-10-29 CISA SSVC decision points changed
  4. 2026-10-29 Priority changed: MEDIUM → LOW
  5. 2026-10-29 CISA SSVC decision points changed

References

Advisory 1

  • TI-2023-24253 Remote command execution due to use of default passwords. KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-59964 Incorrect default permissions in Acronis Backup plugin for cPanel & WHM KEVCVSS 3.0HIGH 7.8
  • TI-2022-03146 Improper privilege management in Acronis Cyber Protect 15 CVSS 3.1HIGH 8.8
  • TI-2025-21714 Weak authentication in Acronis Cyber Protect 16 CVSS 3.0CRITICAL 10.0
  • TI-2025-21713 Weak authentication in Acronis Cyber Protect 16 CVSS 3.0CRITICAL 10.0
  • TI-2025-21712 Missing authentication in Acronis Cyber Protect Cloud Agent CVSS 3.0CRITICAL 9.8
See all 231 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences