CVE-2026-15720

HIGHPre-NVD 8.68.6—
EchelonGraph scoreHIGH 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 — 4 sources updated this weekElevated
8.6
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.6Exploit: NoneExposed: 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(high)
EPSS
29.3%
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 7× in last 7d / 7× 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. 2026-07-15 17:06 UTCEG score recompute
  2. 2026-07-15 17:06 UTCGHSA enrichment
  3. 2026-07-15 16:57 UTCEPSS rescore
  4. 2026-07-15 05:51 UTCEG score recompute
  5. 2026-07-15 05:51 UTCGHSA enrichment
  6. 2026-07-14 18:35 UTCEG score recompute
  7. 2026-07-14 18:35 UTCMITRE cvelistV5first tracked

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 29.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
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.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-15720

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