CVE-2026-19446

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-21. A secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.0%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 allows a remote unauthenticated attacker can send a crafted UDP packet to a reachable RPC service, resulting in complete system unavailability and requiring an LPAR restart.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100CISA 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
Severity75% × 45%
Exploitation1% × 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
1.0%
EPSS %ILE
62nd
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-2026-19446(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 22× in last 7d / 104× 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 170 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-19446?
CVE-2026-19446 is a high vulnerability published on August 20, 2026. IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 allows a remote unauthenticated attacker can send a crafted UDP packet to a reachable RPC service, resulting in complete system unavailability and requiring an LPAR restart.
When was CVE-2026-19446 disclosed?
CVE-2026-19446 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-2026-19446 actively exploited?
CVE-2026-19446 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.0% probability of exploitation in the next 30 days (62nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-19446?
CVE-2026-19446 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-19446?
A fix for CVE-2026-19446 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-19446 are linked in the Vendor Advisories panel on this page.

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