CVE-2026-16919

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-19. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

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

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to execute arbitrary code due to improper validation of network-supplied pointers.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
49%
KEV
Not listed

Published

August 19, 2026

Last Modified

August 27, 2026

Advisory Details (1)

Auto-updated Sep 17, 2026
No patch confirmed yet.
generic

Security Bulletin: Vulnerabilities in IBM AIX and PowerVM VIOS

https://www.ibm.com/support/pages/node/7283858

Vendor Advisories for CVE-2026-16919(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 51× in last 7d / 225× 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 237 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-16919?
CVE-2026-16919 is a critical vulnerability published on August 19, 2026. IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to execute arbitrary code due to improper validation of network-supplied pointers.
When was CVE-2026-16919 disclosed?
CVE-2026-16919 was first published in the National Vulnerability Database on August 19, 2026, with the most recent update on August 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-16919 actively exploited?
CVE-2026-16919 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 50.6% of all scored CVEs.
What is the CVSS score of CVE-2026-16919?
CVE-2026-16919 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-16919?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16919, 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

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