CVE-2023-52951

MEDIUMPre-NVD 5.95.9—
EchelonGraph scoreMEDIUM confidence

Score 5.9 from GitHub Security Advisory published 2026-06-03. a secondary CVSS source baseline 5.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.9Exploit: None knownExposed: 0

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

A cleartext transmission of sensitive information vulnerability in Synology Note Station Client before 2.2.4-703 allows man-in-the-middle attackers to obtain user credential.

CVSS v3
5.9
EG Score
5.9(medium)
EG Risk
27(Track)
EG Risk 27/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity59% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

June 3, 2026

Last Modified

July 22, 2026

Advisory Details (1)

Auto-updated Jun 13, 2026
No patch confirmed yet.
generic

Release Notes for Synology Note Station Client | Synology Inc.

https://www.synology.com/en-global/releaseNote/NoteStationClient

Vendor Advisories for CVE-2023-52951(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 9× in last 7d / 36× 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.

Showing the most recent 100 of 204 total refreshes for this CVE.

  1. 2026-09-16 05:11 UTCEPSS rescore
  2. 2026-09-16 05:11 UTCEPSS rescore
  3. 2026-09-15 03:08 UTCEPSS rescore
  4. 2026-09-14 05:37 UTCEG score recompute
  5. 2026-09-14 05:37 UTCGHSA enrichment
  6. 2026-09-13 16:45 UTCEPSS rescore
  7. 2026-09-12 14:58 UTCEPSS rescore
  8. 2026-09-11 14:51 UTCEPSS rescore
  9. 2026-09-11 09:34 UTCEPSS rescore
  10. 2026-09-08 21:58 UTCEPSS rescore
  11. 2026-09-07 15:59 UTCEPSS rescore
  12. 2026-09-06 13:46 UTCEPSS rescore
  13. 2026-09-04 13:58 UTCEPSS rescore
  14. 2026-09-04 05:04 UTCEPSS rescore
  15. 2026-09-02 14:10 UTCEPSS rescore
  16. 2026-09-01 13:52 UTCEPSS rescore
  17. 2026-09-01 04:36 UTCEPSS rescore
  18. 2026-08-30 19:15 UTCEPSS rescore
  19. 2026-08-30 01:20 UTCEPSS rescore
  20. 2026-08-28 21:39 UTCEPSS rescore
  21. 2026-08-27 14:23 UTCEPSS rescore
  22. 2026-08-25 13:47 UTCEPSS rescore
  23. 2026-08-25 03:40 UTCEG score recompute
  24. 2026-08-25 03:40 UTCGHSA enrichment
  25. 2026-08-23 13:35 UTCEG score recompute
Show 75 more
  1. 2026-08-23 13:35 UTCGHSA enrichment
  2. 2026-08-23 00:17 UTCEPSS rescore
  3. 2026-08-23 00:17 UTCEPSS rescore
  4. 2026-08-21 23:47 UTCEPSS rescore
  5. 2026-08-21 14:43 UTCEG score recompute
  6. 2026-08-21 14:43 UTCGHSA enrichment
  7. 2026-08-20 22:53 UTCEPSS rescore
  8. 2026-08-20 10:05 UTCEG score recompute
  9. 2026-08-20 10:05 UTCGHSA enrichment
  10. 2026-08-19 17:02 UTCEPSS rescore
  11. 2026-08-18 13:46 UTCEPSS rescore
  12. 2026-08-17 03:52 UTCEG score recompute
  13. 2026-08-17 03:52 UTCGHSA enrichment
  14. 2026-08-16 14:54 UTCEPSS rescore
  15. 2026-08-16 02:17 UTCEG score recompute
  16. 2026-08-16 02:17 UTCGHSA enrichment
  17. 2026-08-16 02:12 UTCEPSS rescore
  18. 2026-08-15 01:28 UTCEPSS rescore
  19. 2026-08-14 22:35 UTCGHSA enrichment
  20. 2026-08-13 23:13 UTCEG score recompute
  21. 2026-08-13 23:13 UTCGHSA enrichment
  22. 2026-08-13 21:58 UTCEPSS rescore
  23. 2026-08-12 21:37 UTCEG score recompute
  24. 2026-08-12 21:37 UTCGHSA enrichment
  25. 2026-08-12 13:49 UTCEPSS rescore
  26. 2026-08-11 22:15 UTCEG score recompute
  27. 2026-08-11 22:14 UTCGHSA enrichment
  28. 2026-08-11 13:40 UTCEPSS rescore
  29. 2026-08-10 23:58 UTCEPSS rescore
  30. 2026-08-10 22:45 UTCGHSA enrichment
  31. 2026-08-09 18:04 UTCEG score recompute
  32. 2026-08-09 18:04 UTCGHSA enrichment
  33. 2026-08-09 13:44 UTCEPSS rescore
  34. 2026-08-08 18:42 UTCEG score recompute
  35. 2026-08-08 18:42 UTCGHSA enrichment
  36. 2026-08-08 16:35 UTCEPSS rescore
  37. 2026-08-07 19:18 UTCEG score recompute
  38. 2026-08-07 19:18 UTCGHSA enrichment
  39. 2026-08-07 16:25 UTCEPSS rescore
  40. 2026-08-06 19:56 UTCEG score recompute
  41. 2026-08-06 19:56 UTCGHSA enrichment
  42. 2026-08-06 13:45 UTCEPSS rescore
  43. 2026-08-05 20:34 UTCEG score recompute
  44. 2026-08-05 20:34 UTCGHSA enrichment
  45. 2026-08-05 19:15 UTCEPSS rescore
  46. 2026-08-05 19:15 UTCEPSS rescore
  47. 2026-08-04 19:24 UTCEG score recompute
  48. 2026-08-04 19:24 UTCGHSA enrichment
  49. 2026-08-04 10:36 UTCEPSS rescore
  50. 2026-08-03 15:43 UTCEG score recompute
  51. 2026-08-03 15:43 UTCGHSA enrichment
  52. 2026-08-03 10:34 UTCEPSS rescore
  53. 2026-08-02 12:30 UTCEG score recompute
  54. 2026-08-02 12:30 UTCGHSA enrichment
  55. 2026-08-02 02:25 UTCEPSS rescore
  56. 2026-08-02 02:25 UTCEPSS rescore
  57. 2026-08-01 13:07 UTCEG score recompute
  58. 2026-08-01 13:07 UTCGHSA enrichment
  59. 2026-08-01 04:14 UTCEPSS rescore
  60. 2026-07-31 05:32 UTCEG score recompute
  61. 2026-07-31 05:32 UTCGHSA enrichment
  62. 2026-07-30 16:26 UTCEPSS rescore
  63. 2026-07-30 01:29 UTCEPSS rescore
  64. 2026-07-29 10:25 UTCEG score recompute
  65. 2026-07-29 10:25 UTCGHSA enrichment
  66. 2026-07-28 15:34 UTCEPSS rescore
  67. 2026-07-28 15:34 UTCEPSS rescore
  68. 2026-07-28 03:31 UTCEG score recompute
  69. 2026-07-28 03:30 UTCGHSA enrichment
  70. 2026-07-26 22:41 UTCEG score recompute
  71. 2026-07-26 22:41 UTCGHSA enrichment
  72. 2026-07-26 14:53 UTCEPSS rescore
  73. 2026-07-25 14:16 UTCEPSS rescore
  74. 2026-07-24 14:16 UTCEPSS rescore
  75. 2026-07-23 14:16 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2023-52951?
CVE-2023-52951 is a medium vulnerability published on June 3, 2026. A cleartext transmission of sensitive information vulnerability in Synology Note Station Client before 2.2.4-703 allows man-in-the-middle attackers to obtain user credential.
When was CVE-2023-52951 disclosed?
CVE-2023-52951 was first published in the National Vulnerability Database on June 3, 2026, with the most recent update on July 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-52951 actively exploited?
CVE-2023-52951 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 97.0% of all scored CVEs.
What is the CVSS score of CVE-2023-52951?
CVE-2023-52951 has a CVSS v3 base score of 5.9 (NVD).
How do I remediate CVE-2023-52951?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-52951, 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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