CVE-2017-9554

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2022-05-14. NVD baseline CVSS 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
5.3
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 75%
CISA-KEV: Not listedEPSS: 75%CVSS: 5.3Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
5.3
EG Score
5.3(medium)
EPSS
99.4%
KEV
Not listed

Published

July 24, 2017

Last Modified

May 13, 2026

References (4)

Data Freshness Timeline

(refreshed 5× in last 7d / 27× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-07 13:42 UTCEPSS rescore
  2. 2026-07-05 02:27 UTCEPSS rescore
  3. 2026-07-01 15:03 UTCEPSS rescore
  4. 2026-06-30 23:19 UTCEPSS rescore
  5. 2026-06-30 23:19 UTCEPSS rescore
  6. 2026-06-28 14:04 UTCEPSS rescore
  7. 2026-06-28 04:53 UTCEPSS rescore
  8. 2026-06-28 04:53 UTCEPSS rescore
  9. 2026-06-25 13:47 UTCEPSS rescore
  10. 2026-06-24 14:02 UTCEPSS rescore
  11. 2026-06-24 14:02 UTCEPSS rescore
  12. 2026-06-23 21:30 UTCEPSS rescore
  13. 2026-06-23 21:30 UTCEPSS rescore
  14. 2026-06-21 14:54 UTCEPSS rescore
  15. 2026-06-21 14:54 UTCEPSS rescore
  16. 2026-06-21 01:57 UTCEPSS rescore
  17. 2026-06-21 01:57 UTCEPSS rescore
  18. 2026-06-18 17:50 UTCEPSS rescore
  19. 2026-06-17 17:50 UTCEPSS rescore
  20. 2026-06-15 17:45 UTCEPSS rescore
  21. 2026-06-13 22:58 UTCEPSS rescore
  22. 2026-06-13 22:57 UTCEPSS rescore
  23. 2026-06-12 23:09 UTCEPSS rescore
  24. 2026-06-12 23:09 UTCEPSS rescore
  25. 2026-06-11 13:57 UTCEPSS rescore
Show 46 more
  1. 2026-06-10 22:15 UTCEPSS rescore
  2. 2026-06-10 13:19 UTCEPSS rescore
  3. 2026-06-06 13:45 UTCEPSS rescore
  4. 2026-06-06 13:45 UTCEPSS rescore
  5. 2026-06-05 22:44 UTCEPSS rescore
  6. 2026-06-05 22:44 UTCEPSS rescore
  7. 2026-06-05 06:08 UTCEPSS rescore
  8. 2026-06-05 06:08 UTCEPSS rescore
  9. 2026-06-02 20:11 UTCEPSS rescore
  10. 2026-06-02 20:11 UTCEPSS rescore
  11. 2026-06-01 13:49 UTCEPSS rescore
  12. 2026-06-01 13:49 UTCEPSS rescore
  13. 2026-05-31 00:14 UTCEPSS rescore
  14. 2026-05-31 00:14 UTCEPSS rescore
  15. 2026-05-29 13:41 UTCEPSS rescore
  16. 2026-05-28 13:42 UTCEPSS rescore
  17. 2026-05-28 13:42 UTCEPSS rescore
  18. 2026-05-27 13:38 UTCEPSS rescore
  19. 2026-05-27 13:38 UTCEPSS rescore
  20. 2026-05-22 21:15 UTCEPSS rescore
  21. 2026-05-22 21:15 UTCEPSS rescore
  22. 2026-05-22 21:15 UTCEPSS rescore
  23. 2026-05-22 21:15 UTCEPSS rescore
  24. 2026-05-22 21:15 UTCEPSS rescore
  25. 2026-05-22 21:15 UTCEPSS rescore
  26. 2026-05-22 21:15 UTCEPSS rescore
  27. 2026-05-22 11:29 UTCEG score recompute
  28. 2026-05-22 11:29 UTCGHSA enrichment
  29. 2026-05-20 22:37 UTCEPSS rescore
  30. 2026-05-20 22:37 UTCEPSS rescore
  31. 2026-05-20 22:37 UTCEPSS rescore
  32. 2026-05-20 22:37 UTCEPSS rescore
  33. 2026-05-20 22:37 UTCEPSS rescore
  34. 2026-05-20 22:37 UTCEPSS rescore
  35. 2026-05-20 22:37 UTCEPSS rescore
  36. 2026-05-20 22:37 UTCEPSS rescore
  37. 2026-05-20 22:37 UTCEPSS rescore
  38. 2026-05-20 11:21 UTCEPSS rescore
  39. 2026-05-20 11:21 UTCEPSS rescore
  40. 2026-05-20 11:21 UTCEPSS rescore
  41. 2026-05-20 11:21 UTCEPSS rescore
  42. 2026-05-20 11:21 UTCEPSS rescore
  43. 2026-05-20 11:21 UTCEPSS rescore
  44. 2026-05-18 21:30 UTCEPSS rescore
  45. 2026-05-18 21:30 UTCEPSS rescore
  46. 2026-05-18 21:30 UTCEPSS rescore

Publicly available exploits

(3 references)

Working exploit code is in the public domain (1 Metasploit module) (1 GitHub PoC) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCrfcl/Synology-DiskStation-User-Enumeration-CVE-2017-9554-
    First seen Aug 28, 2018

    Tiny script to enumerate users using CVE-2017-9554 (forget_passwd.cgi)

    Open source ↗
  • Exploit-DBEDB-43455
    First seen Jan 8, 2018

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

    Open source ↗
  • Metasploitauxiliary/scanner/http/synology_forget_passwd_user_enum✓ verified
    First seen Jan 5, 2011

    Synology Forget Password User Enumeration Scanner

    Open source ↗

Frequently asked(5)

What is CVE-2017-9554?
CVE-2017-9554 is a medium vulnerability published on July 24, 2017. 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.
When was CVE-2017-9554 disclosed?
CVE-2017-9554 was first published in the National Vulnerability Database on July 24, 2017, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-9554 actively exploited?
CVE-2017-9554 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2017-9554?
CVE-2017-9554 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2017-9554?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-9554, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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