CVE-2026-16849

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreMEDIUM confidence

Score 4.3 from GitHub Security Advisory published 2026-08-19. a secondary CVSS source baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.3Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to cause a denial of service due to an improper check for an array index boundary.

CVSS v3
4.3
EG Score
4.3(medium)
EG Risk
19(Track)
EG Risk 19/100SSVC: Track

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
Severity43% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
10%
KEV
Not listed

Published

August 19, 2026

Last Modified

August 24, 2026

Advisory Details (1)

Auto-updated Aug 19, 2026
No patch confirmed yet.
generic

Security Bulletin: Vulnerabilities in IBM AIX and PowerVM VIOS

https://www.ibm.com/support/pages/node/7283858

Vendor Advisories for CVE-2026-16849(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 17× in last 7d / 78× 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.

  1. 2026-09-19 19:26 UTCEG score recompute
  2. 2026-09-19 19:26 UTCGHSA enrichment
  3. 2026-09-18 19:27 UTCEPSS rescore
  4. 2026-09-18 17:42 UTCEG score recompute
  5. 2026-09-18 17:42 UTCGHSA enrichment
  6. 2026-09-17 16:07 UTCGHSA enrichment
  7. 2026-09-16 14:32 UTCEG score recompute
  8. 2026-09-16 14:32 UTCGHSA enrichment
  9. 2026-09-16 14:07 UTCEPSS rescore
  10. 2026-09-16 05:14 UTCEPSS rescore
  11. 2026-09-15 12:11 UTCEG score recompute
  12. 2026-09-15 12:11 UTCGHSA enrichment
  13. 2026-09-14 10:36 UTCEG score recompute
  14. 2026-09-14 10:36 UTCGHSA enrichment
  15. 2026-09-13 16:46 UTCEPSS rescore
  16. 2026-09-13 08:57 UTCEG score recompute
  17. 2026-09-13 08:57 UTCGHSA enrichment
  18. 2026-09-12 15:00 UTCEPSS rescore
  19. 2026-09-12 07:23 UTCEG score recompute
  20. 2026-09-12 07:23 UTCGHSA enrichment
  21. 2026-09-11 14:52 UTCEPSS rescore
  22. 2026-09-11 09:36 UTCEPSS rescore
  23. 2026-09-11 05:48 UTCEG score recompute
  24. 2026-09-11 05:48 UTCGHSA enrichment
  25. 2026-09-10 09:34 UTCEPSS rescore
Show 62 more
  1. 2026-09-10 04:13 UTCGHSA enrichment
  2. 2026-09-09 02:32 UTCEG score recompute
  3. 2026-09-09 02:31 UTCGHSA enrichment
  4. 2026-09-08 22:00 UTCEPSS rescore
  5. 2026-09-07 16:07 UTCEG score recompute
  6. 2026-09-07 16:07 UTCGHSA enrichment
  7. 2026-09-07 16:01 UTCEPSS rescore
  8. 2026-09-06 14:31 UTCEG score recompute
  9. 2026-09-06 14:31 UTCGHSA enrichment
  10. 2026-09-06 13:47 UTCEPSS rescore
  11. 2026-09-05 12:57 UTCEG score recompute
  12. 2026-09-05 12:57 UTCGHSA enrichment
  13. 2026-09-04 11:21 UTCEG score recompute
  14. 2026-09-04 11:21 UTCGHSA enrichment
  15. 2026-09-04 05:06 UTCEPSS rescore
  16. 2026-09-03 09:46 UTCEG score recompute
  17. 2026-09-03 09:46 UTCGHSA enrichment
  18. 2026-09-02 14:11 UTCEPSS rescore
  19. 2026-09-02 08:11 UTCEG score recompute
  20. 2026-09-02 08:11 UTCGHSA enrichment
  21. 2026-09-01 13:53 UTCEPSS rescore
  22. 2026-09-01 06:35 UTCEG score recompute
  23. 2026-09-01 06:35 UTCGHSA enrichment
  24. 2026-09-01 04:39 UTCEPSS rescore
  25. 2026-08-31 04:57 UTCEG score recompute
  26. 2026-08-31 04:57 UTCGHSA enrichment
  27. 2026-08-30 19:17 UTCEPSS rescore
  28. 2026-08-30 03:22 UTCEG score recompute
  29. 2026-08-30 03:22 UTCGHSA enrichment
  30. 2026-08-30 01:22 UTCEPSS rescore
  31. 2026-08-29 01:47 UTCEG score recompute
  32. 2026-08-29 01:47 UTCGHSA enrichment
  33. 2026-08-28 21:41 UTCEPSS rescore
  34. 2026-08-27 20:52 UTCEG score recompute
  35. 2026-08-27 20:52 UTCGHSA enrichment
  36. 2026-08-27 14:25 UTCEPSS rescore
  37. 2026-08-26 19:17 UTCEG score recompute
  38. 2026-08-26 19:16 UTCGHSA enrichment
  39. 2026-08-26 14:46 UTCEPSS rescore
  40. 2026-08-25 17:41 UTCEG score recompute
  41. 2026-08-25 17:41 UTCGHSA enrichment
  42. 2026-08-25 13:48 UTCEPSS rescore
  43. 2026-08-24 16:07 UTCEG score recompute
  44. 2026-08-24 16:06 UTCGHSA enrichment
  45. 2026-08-23 21:22 UTCEG score recompute
  46. 2026-08-23 21:22 UTCGHSA enrichment
  47. 2026-08-23 00:19 UTCEPSS rescore
  48. 2026-08-22 19:47 UTCEG score recompute
  49. 2026-08-22 19:47 UTCGHSA enrichment
  50. 2026-08-21 23:49 UTCEPSS rescore
  51. 2026-08-21 18:12 UTCEG score recompute
  52. 2026-08-21 18:12 UTCGHSA enrichment
  53. 2026-08-20 22:55 UTCEPSS rescore
  54. 2026-08-20 16:36 UTCEG score recompute
  55. 2026-08-20 16:36 UTCGHSA enrichment
  56. 2026-08-20 16:07 UTCEG score recompute
  57. 2026-08-20 16:07 UTCGHSA enrichment
  58. 2026-08-20 13:26 UTCEG score recompute
  59. 2026-08-20 13:26 UTCGHSA enrichment
  60. 2026-08-19 20:20 UTCEG score recompute
  61. 2026-08-19 19:43 UTCEG score recompute
  62. 2026-08-19 19:42 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-16849?
CVE-2026-16849 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 remote attacker to cause a denial of service due to an improper check for an array index boundary.
When was CVE-2026-16849 disclosed?
CVE-2026-16849 was first published in the National Vulnerability Database 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-2026-16849 actively exploited?
CVE-2026-16849 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 90.0% of all scored CVEs.
What is the CVSS score of CVE-2026-16849?
CVE-2026-16849 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-16849?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16849, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-16849

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