CVE-2026-16964

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-08-21. A secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 6.5Exploit: 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 remote attacker to intercept messages and forge replies due to the exposure of sensitive information.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
44
EG Risk 44/100CISA 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
Severity65% × 45%
Exploitation0% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.3%
EPSS %ILE
25th
KEV
Not listed

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

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (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 25, 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-2026-16964(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 / 75× 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 124 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 05:45 UTCEG score recompute
  5. 2026-10-04 05:45 UTCGHSA enrichment
  6. 2026-10-03 14:25 UTCEPSS rescore
  7. 2026-10-03 06:35 UTCEG score recompute
  8. 2026-10-03 06:35 UTCGHSA enrichment
  9. 2026-10-02 06:48 UTCEG score recompute
  10. 2026-10-02 06:48 UTCGHSA enrichment
  11. 2026-10-01 19:49 UTCEPSS rescore
  12. 2026-10-01 07:17 UTCEG score recompute
  13. 2026-10-01 07:17 UTCGHSA enrichment
  14. 2026-09-30 15:02 UTCEPSS rescore
  15. 2026-09-30 08:07 UTCEG score recompute
  16. 2026-09-30 08:07 UTCGHSA enrichment
  17. 2026-09-29 15:20 UTCEPSS rescore
  18. 2026-09-29 01:52 UTCEG score recompute
  19. 2026-09-29 01:52 UTCGHSA enrichment
  20. 2026-09-28 13:51 UTCEPSS rescore
  21. 2026-09-28 02:00 UTCEG score recompute
  22. 2026-09-28 02:00 UTCGHSA enrichment
  23. 2026-09-27 13:47 UTCEPSS rescore
  24. 2026-09-27 02:51 UTCEG score recompute
  25. 2026-09-27 02:51 UTCGHSA enrichment
Show 75 more
  1. 2026-09-26 15:58 UTCEPSS rescore
  2. 2026-09-24 19:13 UTCEG score recompute
  3. 2026-09-24 19:13 UTCGHSA enrichment
  4. 2026-09-23 20:03 UTCEG score recompute
  5. 2026-09-23 20:03 UTCGHSA enrichment
  6. 2026-09-22 19:44 UTCEG score recompute
  7. 2026-09-22 19:44 UTCGHSA enrichment
  8. 2026-09-21 19:08 UTCEG score recompute
  9. 2026-09-21 19:08 UTCGHSA enrichment
  10. 2026-09-20 19:58 UTCEG score recompute
  11. 2026-09-20 19:58 UTCGHSA enrichment
  12. 2026-09-19 20:48 UTCEG score recompute
  13. 2026-09-19 20:48 UTCGHSA enrichment
  14. 2026-09-18 21:38 UTCEG score recompute
  15. 2026-09-18 21:38 UTCGHSA enrichment
  16. 2026-09-18 19:27 UTCEPSS rescore
  17. 2026-09-17 21:59 UTCEG score recompute
  18. 2026-09-17 21:59 UTCGHSA enrichment
  19. 2026-09-16 22:49 UTCEG score recompute
  20. 2026-09-16 22:49 UTCGHSA enrichment
  21. 2026-09-16 14:07 UTCEPSS rescore
  22. 2026-09-16 05:14 UTCEPSS rescore
  23. 2026-09-15 23:39 UTCEG score recompute
  24. 2026-09-15 23:39 UTCGHSA enrichment
  25. 2026-09-14 23:48 UTCGHSA enrichment
  26. 2026-09-14 00:04 UTCEG score recompute
  27. 2026-09-14 00:04 UTCGHSA enrichment
  28. 2026-09-13 16:46 UTCEPSS rescore
  29. 2026-09-13 00:55 UTCEG score recompute
  30. 2026-09-13 00:55 UTCGHSA enrichment
  31. 2026-09-12 15:00 UTCEPSS rescore
  32. 2026-09-12 01:45 UTCEG score recompute
  33. 2026-09-12 01:45 UTCGHSA enrichment
  34. 2026-09-11 14:52 UTCEPSS rescore
  35. 2026-09-11 09:36 UTCEPSS rescore
  36. 2026-09-11 02:35 UTCEG score recompute
  37. 2026-09-11 02:35 UTCGHSA enrichment
  38. 2026-09-10 09:34 UTCEPSS rescore
  39. 2026-09-10 03:24 UTCGHSA enrichment
  40. 2026-09-09 04:14 UTCEG score recompute
  41. 2026-09-09 04:14 UTCGHSA enrichment
  42. 2026-09-08 22:00 UTCEPSS rescore
  43. 2026-09-08 04:57 UTCEG score recompute
  44. 2026-09-08 04:57 UTCGHSA enrichment
  45. 2026-09-07 16:01 UTCEPSS rescore
  46. 2026-09-07 05:47 UTCEG score recompute
  47. 2026-09-07 05:46 UTCGHSA enrichment
  48. 2026-09-06 13:47 UTCEPSS rescore
  49. 2026-09-06 06:36 UTCEG score recompute
  50. 2026-09-06 06:36 UTCGHSA enrichment
  51. 2026-09-05 07:26 UTCEG score recompute
  52. 2026-09-05 07:26 UTCGHSA enrichment
  53. 2026-09-04 08:16 UTCEG score recompute
  54. 2026-09-04 08:16 UTCGHSA enrichment
  55. 2026-09-04 05:06 UTCEPSS rescore
  56. 2026-09-03 09:03 UTCEG score recompute
  57. 2026-09-03 09:03 UTCGHSA enrichment
  58. 2026-09-02 14:11 UTCEPSS rescore
  59. 2026-09-02 09:54 UTCEG score recompute
  60. 2026-09-02 09:54 UTCGHSA enrichment
  61. 2026-09-01 13:53 UTCEPSS rescore
  62. 2026-09-01 10:44 UTCEG score recompute
  63. 2026-09-01 10:44 UTCGHSA enrichment
  64. 2026-09-01 04:39 UTCEPSS rescore
  65. 2026-08-31 11:34 UTCEG score recompute
  66. 2026-08-31 11:34 UTCGHSA enrichment
  67. 2026-08-30 19:17 UTCEPSS rescore
  68. 2026-08-30 12:24 UTCEG score recompute
  69. 2026-08-30 12:24 UTCGHSA enrichment
  70. 2026-08-30 01:22 UTCEPSS rescore
  71. 2026-08-29 13:15 UTCEG score recompute
  72. 2026-08-29 13:15 UTCGHSA enrichment
  73. 2026-08-28 21:41 UTCEPSS rescore
  74. 2026-08-28 13:59 UTCGHSA enrichment
  75. 2026-08-27 14:46 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-16964?
CVE-2026-16964 is a medium vulnerability published on August 20, 2026. IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to intercept messages and forge replies due to the exposure of sensitive information.
When was CVE-2026-16964 disclosed?
CVE-2026-16964 was first published on August 20, 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-2026-16964 actively exploited?
CVE-2026-16964 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (25th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-16964?
CVE-2026-16964 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-16964?
A fix for CVE-2026-16964 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-16964 are linked in the Vendor Advisories panel on this page.

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