CVE-2026-8403

MEDIUMPre-NVD 6.16.1—
EchelonGraph scoreHIGH confidence

Score 6.1 from GitHub Security Advisory published 2026-06-30. the CNA's CVSS baseline 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:tr-cert, epss, ghsa
Trending — 4 sources updated this week
6.1
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.1Exploit: NoneExposed: 0

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

Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Eksagate Electronic Engineering and Computer Industry Trade Inc. SYSGUARD 6001 allows Stored XSS.

This issue affects SYSGUARD 6001: from 2.0.2 before 6.1.4.0. 

NOTE: The vendor was contacted and it was learned that the product is not supported.

CVSS v3
6.1
EG Score
6.1(high)
EPSS
4.5%
KEV
Not listed

Published

June 30, 2026

Last Modified

July 6, 2026

Advisory Details (1)

Auto-updated Jun 30, 2026
No patch confirmed yet.
generic

T.C. Siber Güvenlik Başkanlığı

https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-0467

Vendor Advisories for CVE-2026-8403(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 21× in last 7d / 21× 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 21:19 UTCEG score recompute
  2. 2026-07-06 21:19 UTCGHSA enrichment
  3. 2026-07-06 02:23 UTCEPSS rescore
  4. 2026-07-06 02:23 UTCEPSS rescore
  5. 2026-07-05 20:11 UTCEG score recompute
  6. 2026-07-05 20:11 UTCGHSA enrichment
  7. 2026-07-05 02:31 UTCEPSS rescore
  8. 2026-07-05 02:30 UTCEPSS rescore
  9. 2026-07-04 19:04 UTCEG score recompute
  10. 2026-07-04 19:04 UTCGHSA enrichment
  11. 2026-07-04 06:31 UTCEPSS rescore
  12. 2026-07-04 06:31 UTCEPSS rescore
  13. 2026-07-03 17:55 UTCEG score recompute
  14. 2026-07-03 17:55 UTCGHSA enrichment
  15. 2026-07-02 16:47 UTCEG score recompute
  16. 2026-07-02 16:47 UTCGHSA enrichment
  17. 2026-07-01 15:40 UTCEG score recompute
  18. 2026-07-01 15:40 UTCGHSA enrichment
  19. 2026-07-01 15:07 UTCEPSS rescore
  20. 2026-06-30 14:33 UTCEG score recompute
  21. 2026-06-30 14:32 UTCNVD updatefirst tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-8403?
CVE-2026-8403 is a medium vulnerability published on June 30, 2026. Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Eksagate Electronic Engineering and Computer Industry Trade Inc. SYSGUARD 6001 allows Stored XSS. This issue affects SYSGUARD 6001: from 2.0.2 before 6.1.4.0. NOTE: The vendor was contacted and it…
When was CVE-2026-8403 disclosed?
CVE-2026-8403 was first published in the National Vulnerability Database on June 30, 2026, with the most recent update on July 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8403 actively exploited?
CVE-2026-8403 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-8403?
CVE-2026-8403 has a CVSS v4.0 base score of 6.1 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-8403?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8403, 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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