CVE-2017-9554

medium

Published 2017-07-24 · Modified 2026-05-13

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

5.3

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS v4 NEW

—

not yet in upstream

VIR risk

6.3

Description

An information exposure vulnerability in forget_passwd.cgi in Synology DiskStation Manager (DSM) before 6.1.3-15152 allows remote attackers to enumerate valid usernames via unspecified vectors.

Predictions

Exploit likelihood

63%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-43455 webapps cgi

Steve Kaun · 2018-01-08

Synology DiskStation Manager (DSM) < 6.1.3-15152 - 'forget_passwd.cgi' User Enumeration

Source code queued for fetch — refresh in a moment.

Metasploit modules

auxiliary_scanner/http/synology_forget_passwd_user_enum rank 300

Synology Forget Password User Enumeration Scanner

Source fetch failed: fetch_error — view the original via the link above.

References

CWEs

CWE-200

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.