CVE-2026-4937

MEDIUMNVD 6.06.0—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.0 under NVD CVSS v3. EPSS exploit probability: 0.1% (2nd percentile of EPSS-scored CVEs). GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
6.0EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 6.0Exploit: None knownExposed services: Not assessed

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

IBM PowerVM Hypervisor FW1110.00 through FW1110.20, FW1060.00 through FW1060.71, and FW950.00 through FW950.H2 could allow a local attacker with administrative privileges to decrypt encrypted data due to certain hypervisor calls utilizing less entropy than requested.

CVSS v3
6.0
EG Score
6.0MEDIUMmedium confidence
EG Risk
27
EG Risk 27/100CISA 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
Severity60% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.1%
EPSS %ILE
2nd
KEV
Not listed

CISA SSVCTrack at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). 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

August 19, 2026

Last Modified

August 25, 2026

Advisory Details (1)

Auto-updated Aug 19, 2026
No patch confirmed yet.
generic

Security Bulletin: This Power System update is being released to address CVE-2026-4937

https://www.ibm.com/support/pages/node/7283900

Vendor Advisories for CVE-2026-4937(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 14× in last 7d / 64× 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 113 total refreshes for this CVE.

  1. 2026-10-04 23:22 UTCEPSS rescore
  2. 2026-10-04 21:23 UTCGHSA enrichment
  3. 2026-10-03 16:53 UTCEG score recompute
  4. 2026-10-03 16:53 UTCGHSA enrichment
  5. 2026-10-03 14:26 UTCEPSS rescore
  6. 2026-10-02 12:56 UTCEG score recompute
  7. 2026-10-02 12:56 UTCGHSA enrichment
  8. 2026-10-01 19:50 UTCEPSS rescore
  9. 2026-10-01 10:43 UTCEG score recompute
  10. 2026-10-01 10:43 UTCGHSA enrichment
  11. 2026-09-30 15:03 UTCEPSS rescore
  12. 2026-09-30 08:37 UTCEG score recompute
  13. 2026-09-30 08:37 UTCGHSA enrichment
  14. 2026-09-28 13:51 UTCEPSS rescore
  15. 2026-09-28 07:50 UTCEG score recompute
  16. 2026-09-28 07:50 UTCGHSA enrichment
  17. 2026-09-27 13:48 UTCEPSS rescore
  18. 2026-09-27 05:57 UTCEG score recompute
  19. 2026-09-27 05:57 UTCGHSA enrichment
  20. 2026-09-26 15:59 UTCEPSS rescore
  21. 2026-09-26 00:27 UTCEPSS rescore
  22. 2026-09-25 11:49 UTCEG score recompute
  23. 2026-09-25 11:49 UTCGHSA enrichment
  24. 2026-09-24 08:54 UTCGHSA enrichment
  25. 2026-09-23 07:00 UTCEG score recompute
Show 75 more
  1. 2026-09-23 07:00 UTCGHSA enrichment
  2. 2026-09-22 05:07 UTCEG score recompute
  3. 2026-09-22 05:07 UTCGHSA enrichment
  4. 2026-09-21 03:11 UTCGHSA enrichment
  5. 2026-09-20 01:16 UTCEG score recompute
  6. 2026-09-20 01:16 UTCGHSA enrichment
  7. 2026-09-18 23:22 UTCEG score recompute
  8. 2026-09-18 23:22 UTCGHSA enrichment
  9. 2026-09-18 19:28 UTCEPSS rescore
  10. 2026-09-17 21:28 UTCEG score recompute
  11. 2026-09-17 21:28 UTCGHSA enrichment
  12. 2026-09-16 15:49 UTCEG score recompute
  13. 2026-09-16 15:49 UTCGHSA enrichment
  14. 2026-09-16 14:08 UTCEPSS rescore
  15. 2026-09-16 05:15 UTCEPSS rescore
  16. 2026-09-15 13:53 UTCEG score recompute
  17. 2026-09-15 13:53 UTCGHSA enrichment
  18. 2026-09-14 11:59 UTCEG score recompute
  19. 2026-09-14 11:59 UTCGHSA enrichment
  20. 2026-09-13 16:47 UTCEPSS rescore
  21. 2026-09-13 10:05 UTCGHSA enrichment
  22. 2026-09-12 08:11 UTCEG score recompute
  23. 2026-09-12 08:11 UTCGHSA enrichment
  24. 2026-09-11 14:53 UTCEPSS rescore
  25. 2026-09-11 06:17 UTCEG score recompute
  26. 2026-09-11 06:17 UTCGHSA enrichment
  27. 2026-09-10 09:35 UTCEPSS rescore
  28. 2026-09-10 04:23 UTCGHSA enrichment
  29. 2026-09-09 02:29 UTCEG score recompute
  30. 2026-09-09 02:29 UTCGHSA enrichment
  31. 2026-09-08 22:01 UTCEPSS rescore
  32. 2026-09-07 20:08 UTCEG score recompute
  33. 2026-09-07 20:08 UTCGHSA enrichment
  34. 2026-09-07 16:01 UTCEPSS rescore
  35. 2026-09-06 18:13 UTCEG score recompute
  36. 2026-09-06 18:13 UTCGHSA enrichment
  37. 2026-09-06 13:47 UTCEPSS rescore
  38. 2026-09-05 16:19 UTCEG score recompute
  39. 2026-09-05 16:19 UTCGHSA enrichment
  40. 2026-09-04 14:26 UTCEG score recompute
  41. 2026-09-04 14:26 UTCGHSA enrichment
  42. 2026-09-03 12:30 UTCEG score recompute
  43. 2026-09-03 12:30 UTCGHSA enrichment
  44. 2026-09-02 14:12 UTCEPSS rescore
  45. 2026-09-02 10:32 UTCEG score recompute
  46. 2026-09-02 10:32 UTCGHSA enrichment
  47. 2026-09-01 13:54 UTCEPSS rescore
  48. 2026-09-01 08:24 UTCEG score recompute
  49. 2026-09-01 08:24 UTCGHSA enrichment
  50. 2026-09-01 04:40 UTCEPSS rescore
  51. 2026-08-31 06:28 UTCEG score recompute
  52. 2026-08-31 06:28 UTCGHSA enrichment
  53. 2026-08-30 19:17 UTCEPSS rescore
  54. 2026-08-30 04:34 UTCEG score recompute
  55. 2026-08-30 04:34 UTCGHSA enrichment
  56. 2026-08-30 01:22 UTCEPSS rescore
  57. 2026-08-29 02:39 UTCEG score recompute
  58. 2026-08-29 02:39 UTCGHSA enrichment
  59. 2026-08-28 21:41 UTCEPSS rescore
  60. 2026-08-28 00:45 UTCEG score recompute
  61. 2026-08-28 00:45 UTCGHSA enrichment
  62. 2026-08-27 14:25 UTCEPSS rescore
  63. 2026-08-26 22:40 UTCEG score recompute
  64. 2026-08-26 22:40 UTCGHSA enrichment
  65. 2026-08-26 14:46 UTCEPSS rescore
  66. 2026-08-25 20:44 UTCEG score recompute▲ 0.70
  67. 2026-08-25 20:44 UTCGHSA enrichment
  68. 2026-08-25 20:44 UTCNVD updateCVSS v3 → 6
  69. 2026-08-25 00:15 UTCEG score recompute
  70. 2026-08-25 00:15 UTCGHSA enrichment
  71. 2026-08-23 22:21 UTCEG score recompute
  72. 2026-08-23 22:21 UTCGHSA enrichment
  73. 2026-08-23 00:19 UTCEPSS rescore
  74. 2026-08-22 20:27 UTCEG score recompute
  75. 2026-08-22 20:27 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-4937?
CVE-2026-4937 is a medium vulnerability published on August 19, 2026. IBM PowerVM Hypervisor FW1110.00 through FW1110.20, FW1060.00 through FW1060.71, and FW950.00 through FW950.H2 could allow a local attacker with administrative privileges to decrypt encrypted data due to certain hypervisor calls utilizing less entropy than requested.
When was CVE-2026-4937 disclosed?
CVE-2026-4937 was first published on August 19, 2026, with the most recent update on August 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-4937 actively exploited?
CVE-2026-4937 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (2nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-4937?
CVE-2026-4937 has a CVSS v3 base score of 6.0 (NVD).
How do I remediate CVE-2026-4937?
No fix for CVE-2026-4937 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-2026-4937 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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