CVE-2026-78158

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreHIGH confidence

Score 6.3 from GitHub Security Advisory (severity: LOW) published 2026-08-24. a secondary CVSS source baseline 6.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this week
6.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.3Exploit: None knownExposed: 0

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

A flaw has been found in Open5GS 2.8.0. This vulnerability affects unknown code of the component AMF UEContextReleaseRequest Path Handler. Executing a manipulation can lead to improper authorization. It is possible to launch the attack remotely.

CVSS v3
6.3
EG Score
6.3(high)
EG Risk
28(Track)
EG Risk 28/100SSVC: 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
Severity63% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
11%
KEV
Not listed

Published

August 24, 2026

Last Modified

August 27, 2026

Advisory Details (2)

Auto-updated Aug 24, 2026
🔬 Proof of concept available. Patch available. Sources: github.
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 Patch Available🟡 PoC Available

Open5GS AMF UEContextReleaseRequest path allows cross-association release of a UE context owned by another gNB association · Advisory · open5gs/open5gs · GitHub

https://github.com/open5gs/open5gs/security/advisories/GHSA-mg8r-2cvv-xq9j

Vendor Advisories for CVE-2026-78158(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 / 21× 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. 2026-08-27 17:37 UTCEG score recompute
  2. 2026-08-27 17:37 UTCGHSA enrichment
  3. 2026-08-27 17:23 UTCNVD updateCVSS v4 → 2.1
  4. 2026-08-27 17:17 UTCEG score recompute
  5. 2026-08-27 17:17 UTCGHSA enrichment
  6. 2026-08-27 16:43 UTCMITRE cvelistV5CVSS v4 → 5.3
  7. 2026-08-27 14:25 UTCEPSS rescore
  8. 2026-08-27 13:50 UTCGHSA enrichment
  9. 2026-08-26 14:48 UTCEG score recompute
  10. 2026-08-26 14:48 UTCGHSA enrichment
  11. 2026-08-26 14:47 UTCEPSS rescore
  12. 2026-08-25 15:47 UTCEG score recompute
  13. 2026-08-25 15:47 UTCGHSA enrichment
  14. 2026-08-25 13:49 UTCEPSS rescore
  15. 2026-08-24 16:46 UTCEG score recompute
  16. 2026-08-24 16:46 UTCGHSA enrichment
  17. 2026-08-24 14:18 UTCEPSS rescore
  18. 2026-08-24 01:38 UTCEG score recompute
  19. 2026-08-24 01:37 UTCNVD updateCVSS v4 → 2.1
  20. 2026-08-24 00:16 UTCEG score recompute
  21. 2026-08-24 00:15 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-78158?
CVE-2026-78158 is a medium vulnerability published on August 24, 2026. A flaw has been found in Open5GS 2.8.0. This vulnerability affects unknown code of the component AMF UEContextReleaseRequest Path Handler. Executing a manipulation can lead to improper authorization. It is possible to launch the attack remotely.
When was CVE-2026-78158 disclosed?
CVE-2026-78158 was first published in the National Vulnerability Database on August 24, 2026, with the most recent update on August 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-78158 actively exploited?
CVE-2026-78158 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 89.0% of all scored CVEs.
What is the CVSS score of CVE-2026-78158?
CVE-2026-78158 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-78158?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-78158, 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-2026-78158

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