What is CVE-2017-11151?

CVE-2017-11151 is a critical-severity vulnerability in Synology Photo Station, classified under Improper Authentication. CVSS score: 9.8/10. Published 2017-08-08.

How severe is CVE-2017-11151?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in Synology Photo Station

CVE-2017-11151

A vulnerability in synotheme_upload.php in Synology Photo Station before 6.7.3-3432 and 6.3-2967 allows remote attackers to upload arbitrary files without authentication via the logo_upload action.

Vulnerability class: Broken Authentication

Published 2017-08-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.163 (97.0th percentile), scored 2026-10-24.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.163 · newest: 0.163 · change: 0.000

Affected products

Synology Photo Station — versions 6.3-2967
Synology Photo Station — versions before 6.7.3-3432 and 6.3-2967

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

www.synology.com/en-global/support/security/Synology_SA_17_34_PhotoStation (Vendor Advisory)
www.exploit-db.com/exploits/42434/ (VDB Entry, Third Party Advisory, exploit)

Frequently asked questions

What is CVE-2017-11151?: CVE-2017-11151 is a critical-severity vulnerability in Synology Photo Station, classified under Improper Authentication. CVSS score: 9.8/10. Published 2017-08-08.
How severe is CVE-2017-11151?: Critical severity. CVSS v3 base score is 9.8 out of 10.