CVE-2026-15961

MEDIUMNVD 6.06.0—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.0 under NVD CVSS v3. EPSS exploit probability: <0.1% (below the 1st 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 FW1120.00, FW1110.00 through FW1110.30, and FW1060.00 through FW1060.80 IBM PowerVM could allow a local attacker to obtain sensitive information or cause a denial of service due to improper control of format strings.

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
below the 1st
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 fix on record yet.
generic

Security Bulletin: This Power System update is being released to address CVE-2026-15961

https://www.ibm.com/support/pages/node/7283228

Vendor Advisories for CVE-2026-15961(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 / 67× 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 132 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-15961?
CVE-2026-15961 is a medium vulnerability published on August 19, 2026. IBM PowerVM Hypervisor FW1120.00, FW1110.00 through FW1110.30, and FW1060.00 through FW1060.80 IBM PowerVM could allow a local attacker to obtain sensitive information or cause a denial of service due to improper control of format strings.
When was CVE-2026-15961 disclosed?
CVE-2026-15961 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-2026-15961 actively exploited?
CVE-2026-15961 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a <0.1% probability of exploitation in the next 30 days (below the 1st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-15961?
CVE-2026-15961 has a CVSS v3 base score of 6.0 (NVD).
How do I remediate CVE-2026-15961?
No fix for CVE-2026-15961 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-2026-15961 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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