What is CVE-2015-9256?

CVE-2015-9256 is a medium-severity vulnerability in Datto Alto 2, classified under Information Disclosure. CVSS score: 5.3/10. Published 2018-02-20.

How severe is CVE-2015-9256?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Information disclosure in Datto Alto 2

CVE-2015-9256

Datto ALTO and SIRIS devices allow remote attackers to obtain sensitive information via access to device/VM restore mount points, because they do not have ACLs by default.

Vulnerability class: Information Disclosure

Published 2018-02-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.010 (62.5th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 62.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

www.information-paradox.net/2015/02/cve-2015-2081-multiple-vulnerabilities.html (Third Party Advisory)

Frequently asked questions

What is CVE-2015-9256?: CVE-2015-9256 is a medium-severity vulnerability in Datto Alto 2, classified under Information Disclosure. CVSS score: 5.3/10. Published 2018-02-20.
How severe is CVE-2015-9256?: Medium severity. CVSS v3 base score is 5.3 out of 10.