CVE-2026-15720

HIGHPre-NVD 8.68.6—
EchelonGraph scoreMEDIUM confidence

Score 8.6 from GitHub Security Advisory (severity: HIGH) published 2026-07-14. a secondary CVSS source baseline 8.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
8.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.6Exploit: Elevated riskExposed: 0

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

In Open5GS through version 2.7.7 a pre-authentication heap out-of-bounds read in the AMF NAS 5GS mobile-identity handler may result in subscriber-wide denial of service.

CVSS v3
8.6
EG Score
8.6(medium)
EG Risk
70(Attend)
EG Risk 70/100SSVC: Attend

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
Severity86% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
1%
EPSS %ILE
43%
KEV
Not listed

Published

July 14, 2026

Last Modified

July 15, 2026

Advisory Details (1)

Auto-updated Jul 14, 2026
Patch available. Sources: github.
github Patch Available

Pre-auth heap out-of-bounds read in the AMF NAS 5GS mobile-identity handler (systemic, three sinks) · Advisory · open5gs/open5gs · GitHub

https://github.com/open5gs/open5gs/security/advisories/GHSA-f4mx-3x6p-cfwp

Vendor Advisories for CVE-2026-15720(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 20× in last 7d / 111× 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 152 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-15720?
CVE-2026-15720 is a high vulnerability published on July 14, 2026. In Open5GS through version 2.7.7 a pre-authentication heap out-of-bounds read in the AMF NAS 5GS mobile-identity handler may result in subscriber-wide denial of service.
When was CVE-2026-15720 disclosed?
CVE-2026-15720 was first published in the National Vulnerability Database on July 14, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15720 actively exploited?
CVE-2026-15720 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 56.8% of all scored CVEs.
What is the CVSS score of CVE-2026-15720?
CVE-2026-15720 has a CVSS v3 base score of 8.6 (NVD).
How do I remediate CVE-2026-15720?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15720, 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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