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 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
8.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.5Exploit: None knownExposed: 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)
EG Risk
43(Track)
EG Risk 43/100SSVC: Track

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
Severity85% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
5%
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 14× in last 7d / 50× 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 218 total refreshes for this CVE.

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

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 0% probability of exploitation in the next 30 days, which ranks it in the top 95.5% of all scored CVEs.
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.

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