CVE-2026-16927

HIGHNVD 7.07.3▲
EchelonGraph scoreHIGH confidence

Score 7.3 from GitHub Security Advisory (severity: HIGH) published 2026-08-20. NVD baseline CVSS 7.0; sources differ by 0.3.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
7.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.0Exploit: 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 gain root privileges due to a time-of-check to time-of-use (TOCTOU) race condition.

CVSS v3
7.0
EG Score
7.3(high)
EG Risk
33(Track)
EG Risk 33/100SSVC: 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
Severity73% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
0%
KEV
Not listed

Published

August 20, 2026

Last Modified

August 24, 2026

Advisory Details (1)

Auto-updated Aug 20, 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-2026-16927(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 20× in last 7d / 78× 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. 2026-09-19 13:42 UTCGHSA enrichment
  2. 2026-09-19 01:11 UTCEG score recompute
  3. 2026-09-19 01:11 UTCGHSA enrichment
  4. 2026-09-18 19:27 UTCEPSS rescore
  5. 2026-09-18 12:40 UTCGHSA enrichment
  6. 2026-09-18 00:08 UTCEG score recompute
  7. 2026-09-18 00:08 UTCGHSA enrichment
  8. 2026-09-17 11:14 UTCGHSA enrichment
  9. 2026-09-16 22:43 UTCEG score recompute
  10. 2026-09-16 22:43 UTCGHSA enrichment
  11. 2026-09-16 14:07 UTCEPSS rescore
  12. 2026-09-16 09:44 UTCEG score recompute
  13. 2026-09-16 09:44 UTCGHSA enrichment
  14. 2026-09-16 05:14 UTCEPSS rescore
  15. 2026-09-15 21:08 UTCGHSA enrichment
  16. 2026-09-15 08:18 UTCGHSA enrichment
  17. 2026-09-14 19:47 UTCGHSA enrichment
  18. 2026-09-14 07:16 UTCGHSA enrichment
  19. 2026-09-13 18:45 UTCGHSA enrichment
  20. 2026-09-13 06:14 UTCGHSA enrichment
  21. 2026-09-12 17:43 UTCGHSA enrichment
  22. 2026-09-12 05:12 UTCGHSA enrichment
  23. 2026-09-11 16:41 UTCEG score recompute
  24. 2026-09-11 16:41 UTCGHSA enrichment
  25. 2026-09-11 14:52 UTCEPSS rescore
Show 60 more
  1. 2026-09-11 04:10 UTCGHSA enrichment
  2. 2026-09-10 15:39 UTCGHSA enrichment
  3. 2026-09-10 03:05 UTCGHSA enrichment
  4. 2026-09-09 14:33 UTCGHSA enrichment
  5. 2026-09-09 02:00 UTCGHSA enrichment
  6. 2026-09-08 04:05 UTCGHSA enrichment
  7. 2026-09-07 15:34 UTCGHSA enrichment
  8. 2026-09-07 02:44 UTCGHSA enrichment
  9. 2026-09-06 13:42 UTCGHSA enrichment
  10. 2026-09-06 01:11 UTCGHSA enrichment
  11. 2026-09-05 12:37 UTCGHSA enrichment
  12. 2026-09-05 00:06 UTCGHSA enrichment
  13. 2026-09-04 11:35 UTCGHSA enrichment
  14. 2026-09-03 23:02 UTCGHSA enrichment
  15. 2026-09-03 10:30 UTCGHSA enrichment
  16. 2026-09-02 21:53 UTCGHSA enrichment
  17. 2026-09-02 09:19 UTCGHSA enrichment
  18. 2026-09-01 20:48 UTCGHSA enrichment
  19. 2026-09-01 08:17 UTCGHSA enrichment
  20. 2026-08-31 19:37 UTCGHSA enrichment
  21. 2026-08-31 03:44 UTCGHSA enrichment
  22. 2026-08-30 15:13 UTCGHSA enrichment
  23. 2026-08-30 02:42 UTCGHSA enrichment
  24. 2026-08-29 14:11 UTCGHSA enrichment
  25. 2026-08-29 01:29 UTCGHSA enrichment
  26. 2026-08-28 12:27 UTCGHSA enrichment
  27. 2026-08-27 23:55 UTCGHSA enrichment
  28. 2026-08-27 11:25 UTCGHSA enrichment
  29. 2026-08-26 22:54 UTCGHSA enrichment
  30. 2026-08-26 10:22 UTCGHSA enrichment
  31. 2026-08-25 21:50 UTCEG score recompute
  32. 2026-08-25 21:50 UTCGHSA enrichment
  33. 2026-08-25 13:48 UTCEPSS rescore
  34. 2026-08-25 09:19 UTCGHSA enrichment
  35. 2026-08-24 20:48 UTCEG score recompute
  36. 2026-08-24 20:48 UTCGHSA enrichment
  37. 2026-08-24 20:47 UTCNVD updateCVSS v3 → 7
  38. 2026-08-24 17:00 UTCEG score recompute
  39. 2026-08-24 17:00 UTCGHSA enrichment
  40. 2026-08-24 07:43 UTCGHSA enrichment
  41. 2026-08-23 19:12 UTCGHSA enrichment
  42. 2026-08-23 06:42 UTCEG score recompute
  43. 2026-08-23 06:41 UTCGHSA enrichment
  44. 2026-08-23 00:19 UTCEPSS rescore
  45. 2026-08-22 18:11 UTCGHSA enrichment
  46. 2026-08-22 05:40 UTCEG score recompute
  47. 2026-08-22 05:40 UTCGHSA enrichment
  48. 2026-08-21 23:49 UTCEPSS rescore
  49. 2026-08-21 17:09 UTCGHSA enrichment
  50. 2026-08-21 04:35 UTCEG score recompute
  51. 2026-08-21 04:35 UTCGHSA enrichment
  52. 2026-08-21 04:00 UTCEG score recompute
  53. 2026-08-21 04:00 UTCGHSA enrichment
  54. 2026-08-20 17:34 UTCEG score recompute
  55. 2026-08-20 17:34 UTCGHSA enrichment
  56. 2026-08-20 16:33 UTCEG score recompute
  57. 2026-08-20 16:33 UTCGHSA enrichment
  58. 2026-08-20 15:27 UTCEG score recompute
  59. 2026-08-20 14:57 UTCEG score recompute
  60. 2026-08-20 14:57 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-16927?
CVE-2026-16927 is a high vulnerability published on August 20, 2026. IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to gain root privileges due to a time-of-check to time-of-use (TOCTOU) race condition.
When was CVE-2026-16927 disclosed?
CVE-2026-16927 was first published in the National Vulnerability Database on August 20, 2026, with the most recent update on August 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-16927 actively exploited?
CVE-2026-16927 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 100.0% of all scored CVEs.
What is the CVSS score of CVE-2026-16927?
CVE-2026-16927 has a CVSS v3 base score of 7.0 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 7.3.
How do I remediate CVE-2026-16927?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16927, 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-2026-16927

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