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%, top 99% of all CVEs by exploit prediction. 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%CVSS: 6.0Exploit: None knownExposed: 0

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

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
6.0(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
Severity60% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
1%
KEV
Not listed

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 15× in last 7d / 79× 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. 2026-09-18 23:22 UTCEG score recompute
  2. 2026-09-18 23:22 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-17 21:28 UTCEG score recompute
  5. 2026-09-17 21:28 UTCGHSA enrichment
  6. 2026-09-16 15:49 UTCEG score recompute
  7. 2026-09-16 15:49 UTCGHSA enrichment
  8. 2026-09-16 14:08 UTCEPSS rescore
  9. 2026-09-16 05:15 UTCEPSS rescore
  10. 2026-09-15 13:53 UTCEG score recompute
  11. 2026-09-15 13:53 UTCGHSA enrichment
  12. 2026-09-14 11:59 UTCEG score recompute
  13. 2026-09-14 11:59 UTCGHSA enrichment
  14. 2026-09-13 16:47 UTCEPSS rescore
  15. 2026-09-13 10:05 UTCGHSA enrichment
  16. 2026-09-12 08:11 UTCEG score recompute
  17. 2026-09-12 08:11 UTCGHSA enrichment
  18. 2026-09-11 14:53 UTCEPSS rescore
  19. 2026-09-11 06:17 UTCEG score recompute
  20. 2026-09-11 06:17 UTCGHSA enrichment
  21. 2026-09-10 09:35 UTCEPSS rescore
  22. 2026-09-10 04:23 UTCGHSA enrichment
  23. 2026-09-09 02:29 UTCEG score recompute
  24. 2026-09-09 02:29 UTCGHSA enrichment
  25. 2026-09-08 22:01 UTCEPSS rescore
Show 57 more
  1. 2026-09-07 20:08 UTCEG score recompute
  2. 2026-09-07 20:08 UTCGHSA enrichment
  3. 2026-09-07 16:01 UTCEPSS rescore
  4. 2026-09-06 18:13 UTCEG score recompute
  5. 2026-09-06 18:13 UTCGHSA enrichment
  6. 2026-09-06 13:47 UTCEPSS rescore
  7. 2026-09-05 16:19 UTCEG score recompute
  8. 2026-09-05 16:19 UTCGHSA enrichment
  9. 2026-09-04 14:26 UTCEG score recompute
  10. 2026-09-04 14:26 UTCGHSA enrichment
  11. 2026-09-03 12:30 UTCEG score recompute
  12. 2026-09-03 12:30 UTCGHSA enrichment
  13. 2026-09-02 14:12 UTCEPSS rescore
  14. 2026-09-02 10:32 UTCEG score recompute
  15. 2026-09-02 10:32 UTCGHSA enrichment
  16. 2026-09-01 13:54 UTCEPSS rescore
  17. 2026-09-01 08:24 UTCEG score recompute
  18. 2026-09-01 08:24 UTCGHSA enrichment
  19. 2026-09-01 04:40 UTCEPSS rescore
  20. 2026-08-31 06:28 UTCEG score recompute
  21. 2026-08-31 06:28 UTCGHSA enrichment
  22. 2026-08-30 19:17 UTCEPSS rescore
  23. 2026-08-30 04:34 UTCEG score recompute
  24. 2026-08-30 04:34 UTCGHSA enrichment
  25. 2026-08-30 01:22 UTCEPSS rescore
  26. 2026-08-29 02:39 UTCEG score recompute
  27. 2026-08-29 02:39 UTCGHSA enrichment
  28. 2026-08-28 21:41 UTCEPSS rescore
  29. 2026-08-28 00:45 UTCEG score recompute
  30. 2026-08-28 00:45 UTCGHSA enrichment
  31. 2026-08-27 14:25 UTCEPSS rescore
  32. 2026-08-26 22:40 UTCEG score recompute
  33. 2026-08-26 22:40 UTCGHSA enrichment
  34. 2026-08-26 14:46 UTCEPSS rescore
  35. 2026-08-25 20:44 UTCEG score recompute▲ 0.70
  36. 2026-08-25 20:44 UTCGHSA enrichment
  37. 2026-08-25 20:44 UTCNVD updateCVSS v3 → 6
  38. 2026-08-25 00:15 UTCEG score recompute
  39. 2026-08-25 00:15 UTCGHSA enrichment
  40. 2026-08-23 22:21 UTCEG score recompute
  41. 2026-08-23 22:21 UTCGHSA enrichment
  42. 2026-08-23 00:19 UTCEPSS rescore
  43. 2026-08-22 20:27 UTCEG score recompute
  44. 2026-08-22 20:27 UTCGHSA enrichment
  45. 2026-08-21 23:49 UTCEPSS rescore
  46. 2026-08-21 18:33 UTCEG score recompute
  47. 2026-08-21 18:33 UTCGHSA enrichment
  48. 2026-08-20 22:55 UTCEPSS rescore
  49. 2026-08-20 16:36 UTCEG score recompute
  50. 2026-08-20 16:36 UTCGHSA enrichment
  51. 2026-08-20 15:27 UTCEG score recompute
  52. 2026-08-20 15:27 UTCGHSA enrichment
  53. 2026-08-20 13:25 UTCEG score recompute
  54. 2026-08-20 13:25 UTCGHSA enrichment
  55. 2026-08-19 21:20 UTCEG score recompute
  56. 2026-08-19 20:28 UTCEG score recompute
  57. 2026-08-19 20:27 UTCMITRE cvelistV5first tracked

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 in the National Vulnerability Database 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% probability of exploitation in the next 30 days, which ranks it in the top 99.1% of all 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?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-4937, 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-2026-4937

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