CVE-2026-17422

CRITICALNVD 8.89.3▲
EchelonGraph scoreMEDIUM confidence

Score 9.3 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-21. NVD baseline CVSS 8.8; sources differ by 0.5.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
9.3EG
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: 8.8Exploit: 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 buffer overflow.

CVSS v3
8.8
EG Score
9.3CRITICALmedium confidence
EG Risk
42
EG Risk 42/100CISA 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
Severity93% × 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
2nd
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 25, 2026

Advisory Details (1)

Auto-updated Aug 23, 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-2026-17422(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 40× in last 7d / 186× 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 304 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-17422?
CVE-2026-17422 is a critical 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 buffer overflow.
When was CVE-2026-17422 disclosed?
CVE-2026-17422 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-2026-17422 actively exploited?
CVE-2026-17422 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (2nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-17422?
CVE-2026-17422 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.3 (CRITICAL).
How do I remediate CVE-2026-17422?
A fix for CVE-2026-17422 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-17422 are linked in the Vendor Advisories panel on this page.

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