CVE-2026-86212

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreHIGH confidence

Score 4.3 from GitHub Security Advisory (severity: LOW) published 2026-09-06. a secondary CVSS source baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.3Exploit: Elevated riskExposed: 0

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

A vulnerability has been found in Open5GS 2.7.7/2.8.0. This vulnerability affects unknown code of the component AMF/MME. The manipulation leads to improper authorization. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used. The identifier of the patch is 9468de94caed2fc940f4a23cbf734651896d0fde. To fix this issue, it is recommended to deploy a patch.

CVSS v3
4.3
EG Score
4.3(high)
EG Risk
35(Track)
EG Risk 35/100SSVC: Track

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
Severity43% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
20%
KEV
Not listed

Published

September 6, 2026

Last Modified

September 11, 2026

Advisory Details (3)

Auto-updated Sep 6, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

GitHub - open5gs/open5gs: Open5GS is a C-language Open Source implementation for 5G Core and EPC, i.e. the core network of LTE/NR network (Release-19) · GitHub

https://github.com/open5gs/open5gs/
github_commit

commit 9468de94caed (open5gs/open5gs)

Fix landed in open5gs/open5gs commit 9468de94caed — awaiting tagged release

https://github.com/open5gs/open5gs/commit/9468de94caed2fc940f4a23cbf734651896d0fde
generic

[Bug]: AMF - remote crash (assertion \`gnb->ng_reset_ack\`) on a cross-gNB NG RESET · Issue #4680 · open5gs/open5gs · GitHub

https://github.com/open5gs/open5gs/issues/4680

Vendor Advisories for CVE-2026-86212(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 21× in last 7d / 46× 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. 2026-09-20 05:29 UTCEG score recompute
  2. 2026-09-20 05:28 UTCGHSA enrichment
  3. 2026-09-19 07:15 UTCEG score recompute
  4. 2026-09-19 07:15 UTCGHSA enrichment
  5. 2026-09-18 19:28 UTCEPSS rescore
  6. 2026-09-18 09:02 UTCEG score recompute
  7. 2026-09-18 09:02 UTCGHSA enrichment
  8. 2026-09-17 19:32 UTCEPSS rescore
  9. 2026-09-17 10:49 UTCEG score recompute
  10. 2026-09-17 10:49 UTCGHSA enrichment
  11. 2026-09-16 14:09 UTCEPSS rescore
  12. 2026-09-16 12:29 UTCEG score recompute
  13. 2026-09-16 12:29 UTCGHSA enrichment
  14. 2026-09-16 05:15 UTCEPSS rescore
  15. 2026-09-15 14:16 UTCEG score recompute
  16. 2026-09-15 14:16 UTCGHSA enrichment
  17. 2026-09-15 03:12 UTCEPSS rescore
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-14 16:03 UTCGHSA enrichment
  20. 2026-09-13 17:50 UTCEG score recompute
  21. 2026-09-13 17:50 UTCGHSA enrichment
  22. 2026-09-12 19:37 UTCEG score recompute
  23. 2026-09-12 19:37 UTCGHSA enrichment
  24. 2026-09-11 21:24 UTCEG score recompute
  25. 2026-09-11 21:24 UTCGHSA enrichment
Show 21 more
  1. 2026-09-11 21:20 UTCNVD updateCVSS v4 → 2.1
  2. 2026-09-11 20:47 UTCEG score recompute
  3. 2026-09-11 20:47 UTCGHSA enrichment
  4. 2026-09-11 20:43 UTCMITRE cvelistV5CVSS v4 → 5.3
  5. 2026-09-11 14:53 UTCEPSS rescore
  6. 2026-09-11 14:53 UTCEPSS rescore
  7. 2026-09-11 09:13 UTCGHSA enrichment
  8. 2026-09-10 11:00 UTCEG score recompute
  9. 2026-09-10 11:00 UTCGHSA enrichment
  10. 2026-09-09 12:27 UTCEG score recompute
  11. 2026-09-09 12:27 UTCGHSA enrichment
  12. 2026-09-08 22:01 UTCEPSS rescore
  13. 2026-09-08 14:13 UTCGHSA enrichment
  14. 2026-09-08 09:57 UTCEG score recompute
  15. 2026-09-08 09:57 UTCGHSA enrichment
  16. 2026-09-07 10:36 UTCEG score recompute
  17. 2026-09-07 10:36 UTCGHSA enrichment
  18. 2026-09-06 12:23 UTCEG score recompute
  19. 2026-09-06 12:22 UTCNVD updateCVSS v4 → 2.1
  20. 2026-09-06 11:19 UTCEG score recompute
  21. 2026-09-06 11:19 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-86212?
CVE-2026-86212 is a medium vulnerability published on September 6, 2026. A vulnerability has been found in Open5GS 2.7.7/2.8.0. This vulnerability affects unknown code of the component AMF/MME. The manipulation leads to improper authorization. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used. The identifier…
When was CVE-2026-86212 disclosed?
CVE-2026-86212 was first published in the National Vulnerability Database on September 6, 2026, with the most recent update on September 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-86212 actively exploited?
CVE-2026-86212 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 79.5% of all scored CVEs.
What is the CVSS score of CVE-2026-86212?
CVE-2026-86212 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-86212?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-86212, 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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