CVE-2026-16944

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.8 under NVD CVSS v3. EPSS exploit probability: 0.1% (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
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to execute arbitrary code due to a stack-based buffer overflow.

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
35
EG Risk 35/100CISA 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
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.1%
EPSS %ILE
1st
KEV
Not listed

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

A fix is available. Apply it within your standard update timelines.

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 20, 2026

Last Modified

August 24, 2026

Advisory Details (1)

Auto-updated Aug 20, 2026
Patch available.
generic

Security Bulletin: Vulnerabilities in IBM AIX and PowerVM VIOS

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

Vendor Advisories for CVE-2026-16944(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 21× 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 160 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-16944?
CVE-2026-16944 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 execute arbitrary code due to a stack-based buffer overflow.
When was CVE-2026-16944 disclosed?
CVE-2026-16944 was first published 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-2026-16944 actively exploited?
CVE-2026-16944 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (1st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-16944?
CVE-2026-16944 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-16944?
A fix for CVE-2026-16944 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-16944 are linked in the Vendor Advisories panel on this page.

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