CVE-2026-16819

HIGHPre-NVD 7.77.7—
EchelonGraph scoreMEDIUM confidence

Score 7.7 from GitHub Security Advisory (severity: HIGH) published 2026-08-19. a secondary CVSS source baseline 7.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.7Exploit: 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 local attacker to cause a denial of service and compromise data integrity due to a time-of-check time-of-use race condition.

CVSS v3
7.7
EG Score
7.7(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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
Severity77% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
0%
KEV
Not listed

Published

August 19, 2026

Last Modified

August 21, 2026

Advisory Details (1)

Auto-updated Aug 19, 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-2026-16819(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 19× in last 7d / 98× 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 105 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-16819?
CVE-2026-16819 is a high vulnerability published on August 19, 2026. IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to cause a denial of service and compromise data integrity due to a time-of-check time-of-use race condition.
When was CVE-2026-16819 disclosed?
CVE-2026-16819 was first published in the National Vulnerability Database on August 19, 2026, with the most recent update on August 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-16819 actively exploited?
CVE-2026-16819 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 99.6% of all scored CVEs.
What is the CVSS score of CVE-2026-16819?
CVE-2026-16819 has a CVSS v3 base score of 7.7 (NVD).
How do I remediate CVE-2026-16819?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16819, 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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