CVE-2026-7300

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 80% 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
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.8Exploit: NoneExposed: 0

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

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in RTI Connext Professional (Web Integration Service) allows Filter Failure through Buffer Overflow.This issue affects Connext Professional: from 7.4.0 before 7.*, from 7.0.0 before 7.3.1.3, from 6.1.2 before 6.1.*.

CVSS v3
8.8
EG Score
8.8(medium)
EPSS
19.9%
KEV
Not listed

Published

June 17, 2026

Last Modified

June 17, 2026

Advisory Details (1)

Auto-updated Jun 17, 2026
No patch confirmed yet.
generic

RTI Connext Security Bulletins and Advisories (last updated on 2026-06-17)

https://www.rti.com/vulnerabilities/#cve-2026-7300

Vendor Advisories for CVE-2026-7300(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 38× in last 7d / 110× 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 110 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-7300?
CVE-2026-7300 is a high vulnerability published on June 17, 2026. Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in RTI Connext Professional (Web Integration Service) allows Filter Failure through Buffer Overflow.This issue affects Connext Professional: from 7.4.0 before 7., from 7.0.0 before 7.3.1.3, from 6.1.2 before 6.1..
When was CVE-2026-7300 disclosed?
CVE-2026-7300 was first published in the National Vulnerability Database on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-7300 actively exploited?
CVE-2026-7300 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 19.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-7300?
CVE-2026-7300 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-7300?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-7300, 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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