CVE-2026-16844

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-19. A secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%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 remote attacker to execute arbitrary commands due to improper neutralization of special elements used in an OS command.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
40
EG Risk 40/100CISA 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
Severity88% × 45%
Exploitation1% × 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
0.5%
EPSS %ILE
40th
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 19, 2026

Last Modified

August 24, 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-2026-16844(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 24× in last 7d / 105× 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 180 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-16844?
CVE-2026-16844 is a high vulnerability published on August 19, 2026. IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to execute arbitrary commands due to improper neutralization of special elements used in an OS command.
When was CVE-2026-16844 disclosed?
CVE-2026-16844 was first published on August 19, 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-2026-16844 actively exploited?
CVE-2026-16844 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (40th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-16844?
CVE-2026-16844 has a CVSS base score of 8.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-16844?
A fix for CVE-2026-16844 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-16844 are linked in the Vendor Advisories panel on this page.

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