CVE-2026-19653

MEDIUMNVD 5.56.5▲
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-08-19. NVD baseline CVSS 5.5; sources differ by 1.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
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: 0.1%CVSS: 5.5Exploit: 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 local attacker to cause a denial of service due to improper handling of memory page table configurations.

CVSS v3
5.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100CISA 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%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.1%
EPSS %ILE
below the 1st
KEV
Not listed

CISA SSVCTrack at every mission impact level.

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

Exploitation none (CISA Vulnrichment) · Automatable no (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 19, 2026

Last Modified

August 25, 2026

Advisory Details (1)

Auto-updated Aug 19, 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-2026-19653(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 12× in last 7d / 58× 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 106 total refreshes for this CVE.

  1. 2026-10-04 23:21 UTCEPSS rescore
  2. 2026-10-04 21:24 UTCGHSA enrichment
  3. 2026-10-03 16:55 UTCGHSA enrichment
  4. 2026-10-02 12:57 UTCEG score recompute
  5. 2026-10-02 12:57 UTCGHSA enrichment
  6. 2026-10-01 19:49 UTCEPSS rescore
  7. 2026-10-01 10:15 UTCEG score recompute
  8. 2026-10-01 10:15 UTCGHSA enrichment
  9. 2026-09-30 15:03 UTCEPSS rescore
  10. 2026-09-30 08:43 UTCEG score recompute
  11. 2026-09-30 08:43 UTCGHSA enrichment
  12. 2026-09-29 15:20 UTCEPSS rescore
  13. 2026-09-28 08:28 UTCEG score recompute
  14. 2026-09-28 08:28 UTCGHSA enrichment
  15. 2026-09-27 13:47 UTCEPSS rescore
  16. 2026-09-27 06:55 UTCEG score recompute
  17. 2026-09-27 06:55 UTCGHSA enrichment
  18. 2026-09-26 15:58 UTCEPSS rescore
  19. 2026-09-25 03:17 UTCEG score recompute
  20. 2026-09-25 03:17 UTCGHSA enrichment
  21. 2026-09-24 01:37 UTCGHSA enrichment
  22. 2026-09-23 00:05 UTCEG score recompute
  23. 2026-09-23 00:05 UTCGHSA enrichment
  24. 2026-09-21 22:32 UTCEG score recompute
  25. 2026-09-21 22:32 UTCGHSA enrichment
Show 75 more
  1. 2026-09-20 20:59 UTCGHSA enrichment
  2. 2026-09-19 19:26 UTCEG score recompute
  3. 2026-09-19 19:26 UTCGHSA enrichment
  4. 2026-09-18 19:27 UTCEPSS rescore
  5. 2026-09-18 17:39 UTCEG score recompute
  6. 2026-09-18 17:39 UTCGHSA enrichment
  7. 2026-09-17 16:06 UTCGHSA enrichment
  8. 2026-09-16 14:33 UTCEG score recompute
  9. 2026-09-16 14:33 UTCGHSA enrichment
  10. 2026-09-16 14:07 UTCEPSS rescore
  11. 2026-09-16 05:14 UTCEPSS rescore
  12. 2026-09-15 11:59 UTCEG score recompute
  13. 2026-09-15 11:59 UTCGHSA enrichment
  14. 2026-09-14 10:24 UTCGHSA enrichment
  15. 2026-09-13 08:52 UTCEG score recompute
  16. 2026-09-13 08:52 UTCGHSA enrichment
  17. 2026-09-12 15:00 UTCEPSS rescore
  18. 2026-09-12 07:19 UTCEG score recompute
  19. 2026-09-12 07:19 UTCGHSA enrichment
  20. 2026-09-11 14:52 UTCEPSS rescore
  21. 2026-09-11 09:36 UTCEPSS rescore
  22. 2026-09-11 05:46 UTCEG score recompute
  23. 2026-09-11 05:46 UTCGHSA enrichment
  24. 2026-09-10 09:34 UTCEPSS rescore
  25. 2026-09-10 04:14 UTCGHSA enrichment
  26. 2026-09-09 02:35 UTCEG score recompute
  27. 2026-09-09 02:34 UTCGHSA enrichment
  28. 2026-09-08 22:00 UTCEPSS rescore
  29. 2026-09-07 16:01 UTCEPSS rescore
  30. 2026-09-07 15:55 UTCGHSA enrichment
  31. 2026-09-06 14:23 UTCEG score recompute
  32. 2026-09-06 14:22 UTCGHSA enrichment
  33. 2026-09-06 13:47 UTCEPSS rescore
  34. 2026-09-05 12:50 UTCEG score recompute
  35. 2026-09-05 12:50 UTCGHSA enrichment
  36. 2026-09-04 11:11 UTCEG score recompute
  37. 2026-09-04 11:11 UTCGHSA enrichment
  38. 2026-09-04 05:06 UTCEPSS rescore
  39. 2026-09-03 09:38 UTCEG score recompute
  40. 2026-09-03 09:38 UTCGHSA enrichment
  41. 2026-09-02 14:11 UTCEPSS rescore
  42. 2026-09-02 08:06 UTCEG score recompute
  43. 2026-09-02 08:05 UTCGHSA enrichment
  44. 2026-09-01 13:53 UTCEPSS rescore
  45. 2026-09-01 06:28 UTCGHSA enrichment
  46. 2026-08-31 04:53 UTCEG score recompute
  47. 2026-08-31 04:53 UTCGHSA enrichment
  48. 2026-08-30 19:17 UTCEPSS rescore
  49. 2026-08-30 03:21 UTCGHSA enrichment
  50. 2026-08-29 01:48 UTCEG score recompute
  51. 2026-08-29 01:48 UTCGHSA enrichment
  52. 2026-08-28 21:41 UTCEPSS rescore
  53. 2026-08-27 19:44 UTCEG score recompute
  54. 2026-08-27 19:44 UTCGHSA enrichment
  55. 2026-08-27 14:25 UTCEPSS rescore
  56. 2026-08-26 18:12 UTCEG score recompute
  57. 2026-08-26 18:12 UTCGHSA enrichment
  58. 2026-08-26 14:46 UTCEPSS rescore
  59. 2026-08-25 16:26 UTCEG score recompute
  60. 2026-08-25 16:26 UTCGHSA enrichment
  61. 2026-08-25 16:22 UTCNVD updateCVSS v3 → 5.5
  62. 2026-08-24 22:00 UTCEG score recompute
  63. 2026-08-24 22:00 UTCGHSA enrichment
  64. 2026-08-23 20:27 UTCEG score recompute
  65. 2026-08-23 20:27 UTCGHSA enrichment
  66. 2026-08-23 00:19 UTCEPSS rescore
  67. 2026-08-22 18:55 UTCEG score recompute
  68. 2026-08-22 18:55 UTCGHSA enrichment
  69. 2026-08-21 23:49 UTCEPSS rescore
  70. 2026-08-21 17:22 UTCEG score recompute
  71. 2026-08-21 17:22 UTCGHSA enrichment
  72. 2026-08-21 16:29 UTCEG score recompute
  73. 2026-08-21 16:29 UTCGHSA enrichment
  74. 2026-08-21 15:00 UTCEG score recompute
  75. 2026-08-21 15:00 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-19653?
CVE-2026-19653 is a medium vulnerability published on August 19, 2026. IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to cause a denial of service due to improper handling of memory page table configurations.
When was CVE-2026-19653 disclosed?
CVE-2026-19653 was first published on August 19, 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-2026-19653 actively exploited?
CVE-2026-19653 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (below the 1st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-19653?
CVE-2026-19653 has a CVSS v3 base score of 5.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 6.5 (MEDIUM).
How do I remediate CVE-2026-19653?
A fix for CVE-2026-19653 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-19653 are linked in the Vendor Advisories panel on this page.

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