CVE-2023-31309

MEDIUMNVD 6.86.8—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.8 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 98% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
6.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.8Exploit: None knownExposed: 0

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

Improper validation in Power Management Firmware (PMFW) may allow an attacker with privileges to pass malformed workload arguments when exporting table data from SMU to DRAM potentially resulting in a loss of confidentiality and/or availability.

CVSS v3
6.8
EG Score
6.8(medium)
EG Risk
31(Track)
EG Risk 31/100SSVC: 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
Severity68% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

May 15, 2026

Last Modified

May 15, 2026

References (1)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 32× 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 219 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2023-31309?
CVE-2023-31309 is a medium vulnerability published on May 15, 2026. Improper validation in Power Management Firmware (PMFW) may allow an attacker with privileges to pass malformed workload arguments when exporting table data from SMU to DRAM potentially resulting in a loss of confidentiality and/or availability.
When was CVE-2023-31309 disclosed?
CVE-2023-31309 was first published in the National Vulnerability Database on May 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-31309 actively exploited?
CVE-2023-31309 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 98.5% of all scored CVEs.
What is the CVSS score of CVE-2023-31309?
CVE-2023-31309 has a CVSS v3 base score of 6.8 (NVD).
How do I remediate CVE-2023-31309?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-31309, 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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