CVE-2026-16951

MEDIUMPre-NVD 6.76.7—
EchelonGraph scoreMEDIUM confidence

Score 6.7 from GitHub Security Advisory published 2026-08-21. A secondary CVSS source baseline 6.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.7EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 6.7Exploit: None knownExposed services: Not assessed

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

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local authenticated attacker to execute arbitrary code due to a heap-based buffer overflow.

CVSS v3
6.7
EG Score
6.7MEDIUMmedium confidence
EG Risk
30
EG Risk 30/100CISA 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
Severity67% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.2%
EPSS %ILE
6th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

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 24, 2026

Advisory Details (1)

Auto-updated Aug 20, 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-2026-16951(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 20× 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.

Showing the most recent 100 of 128 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-16951?
CVE-2026-16951 is a medium vulnerability published on August 20, 2026. IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local authenticated attacker to execute arbitrary code due to a heap-based buffer overflow.
When was CVE-2026-16951 disclosed?
CVE-2026-16951 was first published on August 20, 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-2026-16951 actively exploited?
CVE-2026-16951 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (6th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-16951?
CVE-2026-16951 has a CVSS base score of 6.7 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-16951?
No fix for CVE-2026-16951 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-16951 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-16951

Explore →

Is Your Infrastructure Affected by CVE-2026-16951?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs