CVE-2026-8655

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-30. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.8Exploit: NoneExposed: 0

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

Multiple Memory overflow vulnerabilities in NetScaler ADC and NetScaler Gateway leading to unpredictable or erroneous behavior and Denial of Service if NetScaler ADC is configured as an LB of type Oracle OR NetScaler ADC is configured as a DNS Proxy OR NetScaler ADC is configured as a DNS recursive resolver deployment

CVSS v3
9.8
EG Score
9.8(high)
EPSS
36.7%
KEV
Not listed

Published

June 30, 2026

Last Modified

July 1, 2026

Advisory Details (1)

Auto-updated Jul 3, 2026
No patch confirmed yet.
generic

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https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696604

Vendor Advisories for CVE-2026-8655(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 78× in last 7d / 78× 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. 2026-07-07 08:39 UTCEG score recompute
  2. 2026-07-07 08:39 UTCGHSA enrichment
  3. 2026-07-07 04:33 UTCEG score recompute
  4. 2026-07-07 04:33 UTCGHSA enrichment
  5. 2026-07-07 00:26 UTCEG score recompute
  6. 2026-07-07 00:26 UTCGHSA enrichment
  7. 2026-07-06 20:20 UTCEG score recompute
  8. 2026-07-06 20:19 UTCGHSA enrichment
  9. 2026-07-06 16:27 UTCEPSS rescore
  10. 2026-07-06 16:27 UTCEPSS rescore
  11. 2026-07-06 16:11 UTCEG score recompute
  12. 2026-07-06 16:10 UTCGHSA enrichment
  13. 2026-07-06 12:01 UTCEG score recompute
  14. 2026-07-06 12:01 UTCGHSA enrichment
  15. 2026-07-06 07:49 UTCEG score recompute
  16. 2026-07-06 07:48 UTCGHSA enrichment
  17. 2026-07-06 03:42 UTCEG score recompute
  18. 2026-07-06 03:42 UTCGHSA enrichment
  19. 2026-07-06 02:23 UTCEPSS rescore
  20. 2026-07-06 02:23 UTCEPSS rescore
  21. 2026-07-05 23:37 UTCEG score recompute
  22. 2026-07-05 23:37 UTCGHSA enrichment
  23. 2026-07-05 19:32 UTCEG score recompute
  24. 2026-07-05 19:32 UTCGHSA enrichment
  25. 2026-07-05 15:27 UTCEG score recompute
Show 53 more
  1. 2026-07-05 15:27 UTCGHSA enrichment
  2. 2026-07-05 11:18 UTCEG score recompute
  3. 2026-07-05 11:18 UTCGHSA enrichment
  4. 2026-07-05 07:13 UTCEG score recompute
  5. 2026-07-05 07:13 UTCGHSA enrichment
  6. 2026-07-05 03:08 UTCEG score recompute
  7. 2026-07-05 03:08 UTCGHSA enrichment
  8. 2026-07-05 02:31 UTCEPSS rescore
  9. 2026-07-05 02:30 UTCEPSS rescore
  10. 2026-07-04 23:03 UTCEG score recompute
  11. 2026-07-04 23:02 UTCGHSA enrichment
  12. 2026-07-04 18:57 UTCEG score recompute
  13. 2026-07-04 18:56 UTCGHSA enrichment
  14. 2026-07-04 14:50 UTCEG score recompute
  15. 2026-07-04 14:50 UTCGHSA enrichment
  16. 2026-07-04 10:45 UTCEG score recompute
  17. 2026-07-04 10:44 UTCGHSA enrichment
  18. 2026-07-04 06:31 UTCEPSS rescore
  19. 2026-07-04 06:31 UTCEPSS rescore
  20. 2026-07-04 06:29 UTCEG score recompute
  21. 2026-07-04 06:29 UTCGHSA enrichment
  22. 2026-07-04 02:19 UTCEG score recompute
  23. 2026-07-04 02:19 UTCGHSA enrichment
  24. 2026-07-03 22:11 UTCEG score recompute
  25. 2026-07-03 22:11 UTCGHSA enrichment
  26. 2026-07-03 18:06 UTCEG score recompute
  27. 2026-07-03 18:06 UTCGHSA enrichment
  28. 2026-07-03 13:58 UTCEG score recompute
  29. 2026-07-03 13:58 UTCGHSA enrichment
  30. 2026-07-03 09:52 UTCEG score recompute
  31. 2026-07-03 09:52 UTCGHSA enrichment
  32. 2026-07-03 05:46 UTCEG score recompute
  33. 2026-07-03 05:46 UTCGHSA enrichment
  34. 2026-07-03 01:39 UTCEG score recompute
  35. 2026-07-03 01:39 UTCGHSA enrichment
  36. 2026-07-02 21:34 UTCEG score recompute
  37. 2026-07-02 21:34 UTCGHSA enrichment
  38. 2026-07-02 17:29 UTCEG score recompute
  39. 2026-07-02 17:29 UTCGHSA enrichment
  40. 2026-07-02 13:24 UTCEG score recompute
  41. 2026-07-02 13:24 UTCGHSA enrichment
  42. 2026-07-02 09:19 UTCEG score recompute
  43. 2026-07-02 09:19 UTCGHSA enrichment
  44. 2026-07-02 05:14 UTCEG score recompute▲ 1.00
  45. 2026-07-02 05:14 UTCGHSA enrichment
  46. 2026-07-01 17:06 UTCNVD updateCVSS v3 → 9.8 · severity → CRITICAL
  47. 2026-07-01 16:20 UTCEG score recompute
  48. 2026-07-01 16:20 UTCGHSA enrichment
  49. 2026-07-01 15:07 UTCEPSS rescore
  50. 2026-07-01 03:27 UTCEG score recompute
  51. 2026-07-01 03:27 UTCGHSA enrichment
  52. 2026-06-30 14:33 UTCEG score recompute
  53. 2026-06-30 14:32 UTCNVD updatefirst tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-8655?
CVE-2026-8655 is a critical vulnerability published on June 30, 2026. Multiple Memory overflow vulnerabilities in NetScaler ADC and NetScaler Gateway leading to unpredictable or erroneous behavior and Denial of Service if NetScaler ADC is configured as an LB of type Oracle OR NetScaler ADC is configured as a DNS Proxy OR NetScaler ADC is configured as a DNS recursive…
When was CVE-2026-8655 disclosed?
CVE-2026-8655 was first published in the National Vulnerability Database on June 30, 2026, with the most recent update on July 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8655 actively exploited?
CVE-2026-8655 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 36.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-8655?
CVE-2026-8655 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-8655?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8655, 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

Explore the affected products and dependency analysis for CVE-2026-8655

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