CVE-2023-4664

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 0.9% (58th percentile of EPSS-scored CVEs). GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
8.8EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.9%CVSS: 8.8Exploit: None knownExposed services: Not assessed

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

Incorrect Default Permissions vulnerability in Saphira Saphira Connect allows Privilege Escalation.

This issue affects Saphira Connect: before 9.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
44
EG Risk 44/100CISA SSVC

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
Severity88% × 45%
Exploitation1% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.9%
EPSS %ILE
59th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 15, 2023

Last Modified

June 17, 2026

Advisory Details (2)

Auto-updated May 21, 2026
No fix on record yet.
generic

T.C. Siber Güvenlik Başkanlığı

https://www.usom.gov.tr/bildirim/tr-23-0535
generic

T.C. Siber Güvenlik Başkanlığı

https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-23-0535

Vendor Advisories for CVE-2023-4664(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 7× in last 7d / 28× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 86 of 181 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 14 repeat rows among the latest 100 are merged into the row they repeat. The 95 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-10 19:57 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  2. 2026-10-09 20:05 UTCEPSS rescoreEPSS 0.9% · 59th percentile
  3. 2026-10-08 17:06 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  4. 2026-10-07 23:46 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  5. 2026-10-06 15:15 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  6. 2026-10-05 17:41 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  7. 2026-10-04 23:20 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  8. 2026-10-03 14:23 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  9. 2026-10-01 19:48 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  10. 2026-09-30 16:32 UTCEG score recompute
  11. 2026-09-30 15:01 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  12. 2026-09-29 15:17 UTCEPSS rescoreEPSS 0.9% · 58th percentile
  13. 2026-09-28 13:49 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  14. 2026-09-27 13:42 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  15. 2026-09-26 00:22 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  16. 2026-09-24 14:01 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  17. 2026-09-23 13:46 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  18. 2026-09-22 14:46 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  19. 2026-09-21 20:31 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  20. 2026-09-20 20:14 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  21. 2026-09-18 19:26 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  22. 2026-09-17 19:25 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  23. 2026-09-16 14:06 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  24. 2026-09-16 05:11 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  25. 2026-09-15 03:08 UTCEPSS rescoreEPSS 0.8% · 55th percentile
Show 61 more
  1. 2026-09-13 16:44 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  2. 2026-09-12 14:58 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  3. 2026-09-11 14:50 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  4. 2026-09-11 09:34 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  5. 2026-09-08 21:58 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  6. 2026-09-07 15:59 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  7. 2026-09-06 13:45 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  8. 2026-09-05 15:26 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  9. 2026-09-04 13:58 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  10. 2026-09-04 05:04 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  11. 2026-09-02 14:09 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  12. 2026-09-01 13:51 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  13. 2026-09-01 04:35 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  14. 2026-08-30 19:15 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  15. 2026-08-30 01:20 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  16. 2026-08-28 21:39 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  17. 2026-08-27 14:23 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  18. 2026-08-26 14:44 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  19. 2026-08-25 13:46 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  20. 2026-08-24 14:14 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  21. 2026-08-23 00:17 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  22. 2026-08-21 23:47 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  23. 2026-08-20 22:53 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  24. 2026-08-19 17:02 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  25. 2026-08-18 13:46 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  26. 2026-08-17 13:45 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  27. 2026-08-16 14:54 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  28. 2026-08-16 02:12 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  29. 2026-08-15 01:28 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  30. 2026-08-13 21:58 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  31. 2026-08-12 13:49 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  32. 2026-08-11 13:40 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  33. 2026-08-10 23:57 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  34. 2026-08-09 13:44 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  35. 2026-08-08 16:35 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  36. 2026-08-07 16:25 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  37. 2026-08-06 13:45 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  38. 2026-08-05 19:15 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  39. 2026-08-04 15:07 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  40. 2026-08-04 10:35 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  41. 2026-08-03 10:34 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  42. 2026-08-02 02:25 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  43. 2026-08-01 04:14 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  44. 2026-07-30 16:26 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  45. 2026-07-30 01:28 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  46. 2026-07-28 15:34 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  47. 2026-07-27 14:10 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  48. 2026-07-26 14:52 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  49. 2026-07-25 14:16 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  50. 2026-07-24 14:16 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  51. 2026-07-23 14:16 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  52. 2026-07-23 02:27 UTCEG score recompute
  53. 2026-07-22 23:14 UTCEG score recompute▲ 1.70
  54. 2026-07-22 14:06 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  55. 2026-07-21 15:23 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  56. 2026-07-20 17:06 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  57. 2026-07-19 14:29 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  58. 2026-07-19 02:27 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  59. 2026-07-18 10:03 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  60. 2026-07-16 17:01 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  61. 2026-07-15 16:56 UTCEPSS rescoreEPSS 0.8% · 52nd percentile

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2023-4664?
CVE-2023-4664 is a high vulnerability published on September 15, 2023. Incorrect Default Permissions vulnerability in Saphira Saphira Connect allows Privilege Escalation. This issue affects Saphira Connect: before 9.
When was the CVE record for CVE-2023-4664 published?
The CVE record for CVE-2023-4664 was published on September 15, 2023. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of June 17, 2026; the record at its source may have been updated since.
Is CVE-2023-4664 actively exploited?
CVE-2023-4664 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.9% probability of exploitation in the next 30 days (59th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2023-4664?
CVE-2023-4664 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2023-4664?
No fix for CVE-2023-4664 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2023-4664 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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