CVE-2026-84696

HIGHPre-NVD 8.28.2—
EchelonGraph scoreHIGH confidence

Score 8.2 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-02. a secondary CVSS source baseline 8.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
8.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.2Exploit: Elevated riskExposed: 0

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

Phison PS3111-S11 controller firmware versions through SBFQT1.3 expose privileged vendor unique commands over the ATA interface with absent or defeatable authentication mechanisms. Attackers can bypass the weak CRC-16 based unlock handshake or exploit builds with no VUC lock to read and write controller memory and raw flash, persisting implants across power cycles.

CVSS v3
8.2
EG Score
8.2(high)
EG Risk
53(Track*)
EG Risk 53/100SSVC: 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
Severity82% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
4%
KEV
Not listed

Published

September 2, 2026

Last Modified

September 10, 2026

Advisory Details (4)

Auto-updated Sep 2, 2026
No patch confirmed yet.
generic

Phison PS3111-S11 Controller Firmware Missing Authentication on Vendor Unique Commands | Advisories | VulnCheck

https://www.vulncheck.com/advisories/phison-ps3111-s11-controller-firmware-missing-authentication-on-vendor-unique-commands
generic

Drive Firmware Security - Phison S11 - Truly Crisp

https://trulycrisp.github.io/drivefirmware/phison_s11/
generic

GitHub - trulycrisp/psychite: Phison S11/PS3111 firmware tools · GitHub

https://github.com/trulycrisp/psychite
generic

GitHub - trulycrisp/disksec: Storage drive firmware security assessment tool · GitHub

https://github.com/trulycrisp/disksec

Vendor Advisories for CVE-2026-84696(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 29× in last 7d / 80× 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. 2026-09-21 07:31 UTCEG score recompute
  2. 2026-09-21 07:30 UTCGHSA enrichment
  3. 2026-09-20 20:16 UTCEPSS rescore
  4. 2026-09-20 19:43 UTCGHSA enrichment
  5. 2026-09-20 08:11 UTCGHSA enrichment
  6. 2026-09-19 20:33 UTCEG score recompute
  7. 2026-09-19 20:33 UTCGHSA enrichment
  8. 2026-09-19 09:00 UTCGHSA enrichment
  9. 2026-09-18 21:24 UTCEG score recompute
  10. 2026-09-18 21:24 UTCGHSA enrichment
  11. 2026-09-18 19:28 UTCEPSS rescore
  12. 2026-09-18 09:12 UTCGHSA enrichment
  13. 2026-09-17 21:40 UTCEG score recompute
  14. 2026-09-17 21:39 UTCGHSA enrichment
  15. 2026-09-17 19:32 UTCEPSS rescore
  16. 2026-09-17 10:06 UTCGHSA enrichment
  17. 2026-09-16 22:33 UTCEG score recompute
  18. 2026-09-16 22:33 UTCGHSA enrichment
  19. 2026-09-16 14:09 UTCEPSS rescore
  20. 2026-09-16 10:59 UTCEG score recompute
  21. 2026-09-16 10:59 UTCGHSA enrichment
  22. 2026-09-16 05:15 UTCEPSS rescore
  23. 2026-09-15 23:25 UTCGHSA enrichment
  24. 2026-09-15 11:31 UTCEG score recompute
  25. 2026-09-15 11:31 UTCGHSA enrichment
Show 55 more
  1. 2026-09-15 03:12 UTCEPSS rescore
  2. 2026-09-15 03:12 UTCEPSS rescore
  3. 2026-09-14 23:57 UTCGHSA enrichment
  4. 2026-09-14 12:24 UTCGHSA enrichment
  5. 2026-09-14 00:51 UTCEG score recompute
  6. 2026-09-14 00:51 UTCGHSA enrichment
  7. 2026-09-13 13:18 UTCGHSA enrichment
  8. 2026-09-13 01:45 UTCEG score recompute
  9. 2026-09-13 01:45 UTCGHSA enrichment
  10. 2026-09-12 14:12 UTCGHSA enrichment
  11. 2026-09-12 02:39 UTCGHSA enrichment
  12. 2026-09-11 15:06 UTCEG score recompute
  13. 2026-09-11 15:06 UTCGHSA enrichment
  14. 2026-09-11 14:53 UTCEPSS rescore
  15. 2026-09-11 14:53 UTCEPSS rescore
  16. 2026-09-11 03:33 UTCGHSA enrichment
  17. 2026-09-10 16:01 UTCGHSA enrichment
  18. 2026-09-10 11:28 UTCEG score recompute
  19. 2026-09-10 11:28 UTCGHSA enrichment
  20. 2026-09-09 23:34 UTCGHSA enrichment
  21. 2026-09-09 10:49 UTCGHSA enrichment
  22. 2026-09-08 23:16 UTCEG score recompute
  23. 2026-09-08 23:16 UTCGHSA enrichment
  24. 2026-09-08 22:01 UTCEPSS rescore
  25. 2026-09-08 08:26 UTCGHSA enrichment
  26. 2026-09-07 20:53 UTCEG score recompute
  27. 2026-09-07 20:53 UTCGHSA enrichment
  28. 2026-09-07 09:20 UTCGHSA enrichment
  29. 2026-09-06 21:44 UTCEG score recompute
  30. 2026-09-06 21:44 UTCGHSA enrichment
  31. 2026-09-06 13:48 UTCEPSS rescore
  32. 2026-09-06 10:11 UTCGHSA enrichment
  33. 2026-09-05 22:33 UTCEG score recompute
  34. 2026-09-05 22:33 UTCGHSA enrichment
  35. 2026-09-05 15:31 UTCEPSS rescore
  36. 2026-09-05 11:01 UTCGHSA enrichment
  37. 2026-09-04 23:27 UTCEG score recompute
  38. 2026-09-04 23:27 UTCGHSA enrichment
  39. 2026-09-04 11:49 UTCEG score recompute
  40. 2026-09-04 11:49 UTCGHSA enrichment
  41. 2026-09-04 05:07 UTCEPSS rescore
  42. 2026-09-04 00:15 UTCGHSA enrichment
  43. 2026-09-03 12:40 UTCGHSA enrichment
  44. 2026-09-03 01:08 UTCEG score recompute
  45. 2026-09-03 01:07 UTCGHSA enrichment
  46. 2026-09-02 14:12 UTCEPSS rescore
  47. 2026-09-02 13:34 UTCEG score recompute
  48. 2026-09-02 13:34 UTCGHSA enrichment
  49. 2026-09-02 13:16 UTCEG score recompute
  50. 2026-09-02 13:16 UTCGHSA enrichment
  51. 2026-09-02 13:02 UTCEG score recompute
  52. 2026-09-02 13:02 UTCGHSA enrichment
  53. 2026-09-02 01:25 UTCEG score recompute
  54. 2026-09-02 01:12 UTCEG score recompute
  55. 2026-09-02 01:10 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-84696?
CVE-2026-84696 is a high vulnerability published on September 2, 2026. Phison PS3111-S11 controller firmware versions through SBFQT1.3 expose privileged vendor unique commands over the ATA interface with absent or defeatable authentication mechanisms. Attackers can bypass the weak CRC-16 based unlock handshake or exploit builds with no VUC lock to read and write…
When was CVE-2026-84696 disclosed?
CVE-2026-84696 was first published in the National Vulnerability Database on September 2, 2026, with the most recent update on September 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-84696 actively exploited?
CVE-2026-84696 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 95.5% of all scored CVEs.
What is the CVSS score of CVE-2026-84696?
CVE-2026-84696 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2026-84696?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-84696, 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.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-84696

Explore →

Is Your Infrastructure Affected by CVE-2026-84696?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs