What is CVE-2026-87103?

CVE-2026-87103 is a high-severity vulnerability in Acronis Cyber Protect 17, classified under Improper Verification of Cryptographic Signature. CVSS score: 7.4/10. Published 2026-10-28.

How severe is CVE-2026-87103?

High severity. CVSS v3 base score is 7.4 out of 10.

Vulnerability in Acronis Cyber Protect 17

CVE-2026-87103

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

Published 2026-10-28 · last modified 2026-10-28.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Acronis Cyber Protect 17

Weakness classification (CWE)

CWE-347 — Improper Verification of Cryptographic Signature

References

security-advisory.acronis.com/advisories/SEC-9814 (vendor-advisory)

Frequently asked questions

What is CVE-2026-87103?: CVE-2026-87103 is a high-severity vulnerability in Acronis Cyber Protect 17, classified under Improper Verification of Cryptographic Signature. CVSS score: 7.4/10. Published 2026-10-28.
How severe is CVE-2026-87103?: High severity. CVSS v3 base score is 7.4 out of 10.