CVE-2026-8797

HIGHPre-NVD 8.58.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1%, top 98% 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
8.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.5Exploit: NoneExposed: 0

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

An access control deficiency vulnerability exists in ExpressUpdate Agent for Windows. If a malicious user gains access to the product, arbitrary code could be executed with SYSTEM privileges.

CVSS v3
8.5
EG Score
8.5(medium)
EPSS
2.4%
KEV
Not listed

Published

June 26, 2026

Last Modified

June 26, 2026

References (1)

Vendor Advisories for CVE-2026-8797(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 10× in last 7d / 72× 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. 2026-07-22 14:08 UTCEPSS rescore
  2. 2026-07-21 15:25 UTCEPSS rescore
  3. 2026-07-21 15:25 UTCEPSS rescore
  4. 2026-07-20 17:08 UTCEPSS rescore
  5. 2026-07-19 14:31 UTCEPSS rescore
  6. 2026-07-18 10:04 UTCEPSS rescore
  7. 2026-07-17 03:42 UTCGHSA enrichment
  8. 2026-07-16 17:03 UTCEPSS rescore
  9. 2026-07-16 15:04 UTCGHSA enrichment
  10. 2026-07-16 02:22 UTCGHSA enrichment
  11. 2026-07-15 16:57 UTCEPSS rescore
  12. 2026-07-15 13:45 UTCGHSA enrichment
  13. 2026-07-15 02:00 UTCEPSS rescore
  14. 2026-07-15 01:07 UTCGHSA enrichment
  15. 2026-07-14 12:30 UTCGHSA enrichment
  16. 2026-07-13 23:51 UTCGHSA enrichment
  17. 2026-07-13 22:31 UTCEPSS rescore
  18. 2026-07-13 11:14 UTCGHSA enrichment
  19. 2026-07-13 06:13 UTCEPSS rescore
  20. 2026-07-12 22:37 UTCGHSA enrichment
  21. 2026-07-12 10:00 UTCGHSA enrichment
  22. 2026-07-11 21:23 UTCGHSA enrichment
  23. 2026-07-11 08:46 UTCGHSA enrichment
  24. 2026-07-11 08:27 UTCEPSS rescore
  25. 2026-07-10 20:09 UTCGHSA enrichment
Show 47 more
  1. 2026-07-10 07:32 UTCGHSA enrichment
  2. 2026-07-09 19:10 UTCEPSS rescore
  3. 2026-07-09 18:50 UTCGHSA enrichment
  4. 2026-07-09 06:12 UTCGHSA enrichment
  5. 2026-07-08 17:30 UTCGHSA enrichment
  6. 2026-07-08 15:16 UTCEPSS rescore
  7. 2026-07-08 04:53 UTCGHSA enrichment
  8. 2026-07-07 16:13 UTCGHSA enrichment
  9. 2026-07-07 13:46 UTCEPSS rescore
  10. 2026-07-07 02:28 UTCGHSA enrichment
  11. 2026-07-06 16:27 UTCEPSS rescore
  12. 2026-07-06 16:27 UTCEPSS rescore
  13. 2026-07-06 13:50 UTCGHSA enrichment
  14. 2026-07-06 02:23 UTCEPSS rescore
  15. 2026-07-06 02:23 UTCEPSS rescore
  16. 2026-07-06 01:06 UTCGHSA enrichment
  17. 2026-07-05 12:28 UTCGHSA enrichment
  18. 2026-07-05 02:31 UTCEPSS rescore
  19. 2026-07-05 02:30 UTCEPSS rescore
  20. 2026-07-04 23:50 UTCGHSA enrichment
  21. 2026-07-04 11:13 UTCGHSA enrichment
  22. 2026-07-04 06:31 UTCEPSS rescore
  23. 2026-07-04 06:31 UTCEPSS rescore
  24. 2026-07-03 22:35 UTCGHSA enrichment
  25. 2026-07-03 09:58 UTCGHSA enrichment
  26. 2026-07-02 21:17 UTCGHSA enrichment
  27. 2026-07-02 08:40 UTCGHSA enrichment
  28. 2026-07-01 19:58 UTCGHSA enrichment
  29. 2026-07-01 07:21 UTCGHSA enrichment
  30. 2026-06-30 23:22 UTCEPSS rescore
  31. 2026-06-30 18:44 UTCGHSA enrichment
  32. 2026-06-30 06:07 UTCGHSA enrichment
  33. 2026-06-29 17:30 UTCGHSA enrichment
  34. 2026-06-29 14:06 UTCEPSS rescore
  35. 2026-06-29 04:50 UTCGHSA enrichment
  36. 2026-06-28 16:12 UTCGHSA enrichment
  37. 2026-06-28 14:07 UTCEPSS rescore
  38. 2026-06-28 04:56 UTCEPSS rescore
  39. 2026-06-28 03:34 UTCGHSA enrichment
  40. 2026-06-27 14:57 UTCGHSA enrichment
  41. 2026-06-27 03:08 UTCEPSS rescore
  42. 2026-06-27 02:19 UTCGHSA enrichment
  43. 2026-06-26 13:41 UTCEG score recompute▲ 8.50
  44. 2026-06-26 13:40 UTCGHSA enrichment
  45. 2026-06-26 13:40 UTCNVD updateCVSS v3 → 8.5 · CVSS v4 → 8.5
  46. 2026-06-26 09:36 UTCEG score recompute
  47. 2026-06-26 09:36 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-8797?
CVE-2026-8797 is a high vulnerability published on June 26, 2026. An access control deficiency vulnerability exists in ExpressUpdate Agent for Windows. If a malicious user gains access to the product, arbitrary code could be executed with SYSTEM privileges.
When was CVE-2026-8797 disclosed?
CVE-2026-8797 was first published in the National Vulnerability Database on June 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8797 actively exploited?
CVE-2026-8797 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-8797?
CVE-2026-8797 has a CVSS v3 base score of 8.5 (NVD).
How do I remediate CVE-2026-8797?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8797, 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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