CVE-2026-16835

CRITICALPre-NVD 9.69.6—
EchelonGraph scoreMEDIUM confidence

Score 9.6 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-19. A secondary CVSS source baseline 9.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
9.6EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 9.6Exploit: 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 Power Systems Firmware FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2 is affected by a vulnerability in the FSP management network protocol. An unauthenticated attacker on the management network can bypass authentication and perform any administrative operation on the managed system, including control of partition power state, configuration, and console access across all hosted partitions, resulting in a confidentiality, integrity, and availability impact to the managed system.

CVSS v3
9.6
EG Score
9.6CRITICALmedium confidence
EG Risk
43
EG Risk 43/100CISA 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
Severity96% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
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
0.4%
EPSS %ILE
27th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

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 total (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 Sep 30, 2026
No patch confirmed yet.
generic

Security Bulletin: This Power System update is being released to address CVE-2026-16835

https://www.ibm.com/support/pages/node/7283894

Vendor Advisories for CVE-2026-16835(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 40× in last 7d / 196× 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 331 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-16835?
CVE-2026-16835 is a critical vulnerability published on August 19, 2026. IBM Power Systems Firmware FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2 is affected by a vulnerability in the FSP management network protocol. An unauthenticated attacker on the management network can bypass authentication and perform any…
When was CVE-2026-16835 disclosed?
CVE-2026-16835 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-2026-16835 actively exploited?
CVE-2026-16835 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (27th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-16835?
CVE-2026-16835 has a CVSS base score of 9.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-16835?
No fix for CVE-2026-16835 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-2026-16835 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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