CVE-2026-8484

MEDIUMPre-NVD 4.84.8—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1%, top 96% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
4.8
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 4.8Exploit: NoneExposed: 0

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

A heap buffer overflow vulnerability exists in the Jansi JNI "ioctl()" wrapper due to a lack of size verification for the argument array before the system call. This can lead to heap corruption and application crashes (DoS). All versions are believed to be vulnerable. This project is unmaintained at the time of CVE assignment.

CVSS v3
4.8
EG Score
4.8(medium)
EPSS
3.8%
KEV
Not listed

Published

June 16, 2026

Last Modified

June 16, 2026

Advisory Details (2)

Auto-updated Jun 16, 2026
No patch confirmed yet.
generic

GitHub - fusesource/jansi: Jansi is a small java library that allows you to use ANSI escape sequences to format your console output which works even on windows. · GitHub

https://github.com/fusesource/jansi/tree/master
generic

Vulnerability in jansi library | CERT Polska

https://cert.pl/en/posts/2026/06/CVE-2026-8484

Vendor Advisories for CVE-2026-8484(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 / 61× 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. 2026-07-06 16:27 UTCEPSS rescore
  2. 2026-07-06 16:27 UTCEPSS rescore
  3. 2026-07-06 05:30 UTCEG score recompute
  4. 2026-07-06 05:30 UTCGHSA enrichment
  5. 2026-07-05 03:09 UTCEG score recompute
  6. 2026-07-05 03:09 UTCGHSA enrichment
  7. 2026-07-05 02:31 UTCEPSS rescore
  8. 2026-07-05 02:30 UTCEPSS rescore
  9. 2026-07-04 06:31 UTCEPSS rescore
  10. 2026-07-04 06:31 UTCEPSS rescore
  11. 2026-07-04 01:19 UTCEG score recompute
  12. 2026-07-04 01:19 UTCGHSA enrichment
  13. 2026-07-02 23:12 UTCEG score recompute
  14. 2026-07-02 23:12 UTCGHSA enrichment
  15. 2026-07-01 21:21 UTCEG score recompute
  16. 2026-07-01 21:21 UTCGHSA enrichment
  17. 2026-07-01 15:07 UTCEPSS rescore
  18. 2026-06-30 23:22 UTCEPSS rescore
  19. 2026-06-30 19:31 UTCEG score recompute
  20. 2026-06-30 19:31 UTCGHSA enrichment
  21. 2026-06-29 17:39 UTCEG score recompute
  22. 2026-06-29 17:39 UTCGHSA enrichment
  23. 2026-06-29 14:06 UTCEPSS rescore
  24. 2026-06-28 15:32 UTCEG score recompute
  25. 2026-06-28 15:32 UTCGHSA enrichment
Show 36 more
  1. 2026-06-28 14:07 UTCEPSS rescore
  2. 2026-06-28 04:56 UTCEPSS rescore
  3. 2026-06-27 13:42 UTCEG score recompute
  4. 2026-06-27 13:42 UTCGHSA enrichment
  5. 2026-06-27 03:08 UTCEPSS rescore
  6. 2026-06-26 11:51 UTCEG score recompute
  7. 2026-06-26 11:51 UTCGHSA enrichment
  8. 2026-06-25 13:50 UTCEPSS rescore
  9. 2026-06-25 07:03 UTCEG score recompute
  10. 2026-06-25 07:03 UTCGHSA enrichment
  11. 2026-06-24 14:05 UTCEPSS rescore
  12. 2026-06-24 05:09 UTCEG score recompute
  13. 2026-06-24 05:08 UTCGHSA enrichment
  14. 2026-06-23 21:33 UTCEPSS rescore
  15. 2026-06-23 03:13 UTCEG score recompute
  16. 2026-06-23 03:13 UTCGHSA enrichment
  17. 2026-06-22 14:25 UTCEPSS rescore
  18. 2026-06-22 01:22 UTCEG score recompute
  19. 2026-06-22 01:22 UTCGHSA enrichment
  20. 2026-06-21 14:56 UTCEPSS rescore
  21. 2026-06-21 01:59 UTCEPSS rescore
  22. 2026-06-20 23:26 UTCEG score recompute
  23. 2026-06-20 23:25 UTCGHSA enrichment
  24. 2026-06-19 21:21 UTCEG score recompute
  25. 2026-06-19 21:21 UTCGHSA enrichment
  26. 2026-06-19 19:26 UTCEPSS rescore
  27. 2026-06-18 19:29 UTCEG score recompute
  28. 2026-06-18 19:29 UTCGHSA enrichment
  29. 2026-06-17 17:53 UTCEPSS rescore
  30. 2026-06-17 17:38 UTCEG score recompute
  31. 2026-06-17 17:38 UTCGHSA enrichment
  32. 2026-06-16 15:48 UTCEG score recompute▲ 4.80
  33. 2026-06-16 15:48 UTCGHSA enrichment
  34. 2026-06-16 15:47 UTCNVD updateCVSS v3 → 4.8 · CVSS v4 → 4.8
  35. 2026-06-16 12:44 UTCEG score recompute
  36. 2026-06-16 12:44 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-8484?
CVE-2026-8484 is a medium vulnerability published on June 16, 2026. A heap buffer overflow vulnerability exists in the Jansi JNI "ioctl()" wrapper due to a lack of size verification for the argument array before the system call. This can lead to heap corruption and application crashes (DoS). All versions are believed to be vulnerable. This project is unmaintained…
When was CVE-2026-8484 disclosed?
CVE-2026-8484 was first published in the National Vulnerability Database on June 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8484 actively exploited?
CVE-2026-8484 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-8484?
CVE-2026-8484 has a CVSS v3 base score of 4.8 (NVD).
How do I remediate CVE-2026-8484?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8484, 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

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