CVE-2026-16980

MEDIUMNVD 5.56.3▲
EchelonGraph scoreMEDIUM confidence

Score 6.3 from GitHub Security Advisory published 2026-08-21. NVD baseline CVSS 5.5; sources differ by 0.8.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
6.3EG
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 validation of symbolic links.

CVSS v3
5.5
EG Score
6.3MEDIUMmedium confidence
EG Risk
28
EG Risk 28/100CISA 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
Severity63% × 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 20, 2026

Last Modified

August 24, 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-2026-16980(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 / 70× 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 121 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-16980?
CVE-2026-16980 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 attacker to cause a denial of service due to improper validation of symbolic links.
When was CVE-2026-16980 disclosed?
CVE-2026-16980 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-2026-16980 actively exploited?
CVE-2026-16980 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-2026-16980?
CVE-2026-16980 has a CVSS v3 base score of 5.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 6.3 (MEDIUM).
How do I remediate CVE-2026-16980?
A fix for CVE-2026-16980 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-16980 are linked in the Vendor Advisories panel on this page.

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