CVE-2026-75439

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-09-04. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: Elevated riskExposed: 0

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

An issue in Free5GC v.4.2.2 allows a remote attacker to cause a denial of service via the UPF component

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
65(Attend)
EG Risk 65/100SSVC: 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
Severity75% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
1%
EPSS %ILE
53%
KEV
Not listed

Published

September 4, 2026

Last Modified

September 14, 2026

Advisory Details (4)

Auto-updated Sep 14, 2026
Patch available. Sources: github_pr.
generic

5GCVulDB/CVE-2026-75439 at main · hackeryounow/5GCVulDB · GitHub

https://github.com/hackeryounow/5GCVulDB/tree/main/CVE-2026-75439
generic

CVE-2026-75439 · GitHub

https://gist.github.com/hackeryounow/0f434c03008462e6eec3b43ed3cd12d8
github_pr Patch Available

Fix/nil when processing session report response

Patch available: free5gc/go-upf v1.2.12 (PR #97 merged 2026-06-24)

https://github.com/free5gc/go-upf/pull/97
generic

[Bugs] UPF crashes with nil pointer dereference when processing Session Report Response for a deleted PFCP session · Issue #1059 · free5gc/free5gc · GitHub

https://github.com/free5gc/free5gc/issues/1059

Vendor Advisories for CVE-2026-75439(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 28× in last 7d / 62× 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. 2026-09-25 11:13 UTCGHSA enrichment
  2. 2026-09-24 23:17 UTCEG score recompute
  3. 2026-09-24 23:17 UTCGHSA enrichment
  4. 2026-09-24 14:04 UTCEPSS rescore
  5. 2026-09-24 11:12 UTCGHSA enrichment
  6. 2026-09-23 23:56 UTCEG score recompute
  7. 2026-09-23 23:56 UTCGHSA enrichment
  8. 2026-09-23 17:54 UTCEPSS rescore
  9. 2026-09-23 12:41 UTCGHSA enrichment
  10. 2026-09-23 01:23 UTCEG score recompute
  11. 2026-09-23 01:23 UTCGHSA enrichment
  12. 2026-09-22 16:01 UTCEPSS rescore
  13. 2026-09-22 14:08 UTCGHSA enrichment
  14. 2026-09-22 02:52 UTCEG score recompute
  15. 2026-09-22 02:52 UTCGHSA enrichment
  16. 2026-09-21 21:09 UTCEPSS rescore
  17. 2026-09-21 15:35 UTCGHSA enrichment
  18. 2026-09-21 04:19 UTCEG score recompute
  19. 2026-09-21 04:19 UTCGHSA enrichment
  20. 2026-09-20 20:16 UTCEPSS rescore
  21. 2026-09-20 17:03 UTCGHSA enrichment
  22. 2026-09-20 05:47 UTCGHSA enrichment
  23. 2026-09-19 18:32 UTCEG score recompute
  24. 2026-09-19 18:32 UTCGHSA enrichment
  25. 2026-09-19 07:16 UTCGHSA enrichment
Show 37 more
  1. 2026-09-18 20:00 UTCEG score recompute
  2. 2026-09-18 20:00 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 08:43 UTCGHSA enrichment
  5. 2026-09-17 21:27 UTCEG score recompute
  6. 2026-09-17 21:27 UTCGHSA enrichment
  7. 2026-09-17 10:11 UTCGHSA enrichment
  8. 2026-09-16 22:55 UTCEG score recompute
  9. 2026-09-16 22:55 UTCGHSA enrichment
  10. 2026-09-16 14:08 UTCEPSS rescore
  11. 2026-09-16 11:39 UTCEG score recompute
  12. 2026-09-16 11:39 UTCGHSA enrichment
  13. 2026-09-16 05:15 UTCEPSS rescore
  14. 2026-09-16 00:22 UTCGHSA enrichment
  15. 2026-09-15 13:03 UTCEG score recompute
  16. 2026-09-15 13:03 UTCGHSA enrichment
  17. 2026-09-15 03:12 UTCEPSS rescore
  18. 2026-09-15 01:48 UTCEG score recompute
  19. 2026-09-15 01:48 UTCGHSA enrichment
  20. 2026-09-14 14:32 UTCEG score recompute
  21. 2026-09-14 14:32 UTCGHSA enrichment
  22. 2026-09-14 13:30 UTCEG score recompute▲ 7.50
  23. 2026-09-14 13:30 UTCGHSA enrichment
  24. 2026-09-14 13:29 UTCMITRE cvelistV5CVSS v3 → 7.5 · severity → HIGH
  25. 2026-09-14 12:20 UTCGHSA enrichment
  26. 2026-09-12 15:02 UTCEPSS rescore
  27. 2026-09-11 16:10 UTCGHSA enrichment
  28. 2026-09-11 14:53 UTCEPSS rescore
  29. 2026-09-10 09:35 UTCEPSS rescore
  30. 2026-09-08 22:01 UTCEPSS rescore
  31. 2026-09-08 19:59 UTCGHSA enrichment
  32. 2026-09-07 17:38 UTCEG score recompute
  33. 2026-09-07 17:38 UTCGHSA enrichment
  34. 2026-09-06 13:48 UTCEPSS rescore
  35. 2026-09-04 21:23 UTCNVD update
  36. 2026-09-04 20:24 UTCEG score recompute
  37. 2026-09-04 20:24 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-75439?
CVE-2026-75439 is a high vulnerability published on September 4, 2026. An issue in Free5GC v.4.2.2 allows a remote attacker to cause a denial of service via the UPF component
When was CVE-2026-75439 disclosed?
CVE-2026-75439 was first published in the National Vulnerability Database on September 4, 2026, with the most recent update on September 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-75439 actively exploited?
CVE-2026-75439 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 46.8% of all scored CVEs.
What is the CVSS score of CVE-2026-75439?
CVE-2026-75439 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-75439?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-75439, 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

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