CVE-2026-78157

HIGHPre-NVD 7.47.4—
EchelonGraph scoreHIGH confidence

Score 7.4 from GitHub Security Advisory (severity: LOW) published 2026-08-24. a secondary CVSS source baseline 7.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this weekElevated
7.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.4Exploit: Elevated riskExposed: 0

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

A vulnerability was detected in Open5GS 2.8.0. This affects the function pcrf_rx_aar_cb of the file src/pcrf/pcrf-rx-path.c of the component Rx AA-Request Handler. Performing a manipulation results in out-of-bounds read. It is possible to initiate the attack remotely. The patch is named c18dc6938bf63cc7374315d3dca303d92066e746. To fix this issue, it is recommended to deploy a patch.

CVSS v3
7.4
EG Score
7.4(high)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity74% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

August 24, 2026

Last Modified

August 24, 2026

Advisory Details (3)

Auto-updated Aug 24, 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 c18dc6938bf6 (open5gs/open5gs)

Fix landed in open5gs/open5gs commit c18dc6938bf6 — awaiting tagged release

https://github.com/open5gs/open5gs/commit/c18dc6938bf63cc7374315d3dca303d92066e746
generic

[Bug]: Rx AAR PCRF out-of-bounds read hashing a short Framed-IP-Address · Issue #4663 · open5gs/open5gs · GitHub

https://github.com/open5gs/open5gs/issues/4663

Vendor Advisories for CVE-2026-78157(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 37× in last 7d / 37× 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. 2026-08-30 05:12 UTCEG score recompute
  2. 2026-08-30 05:12 UTCGHSA enrichment
  3. 2026-08-30 01:22 UTCEPSS rescore
  4. 2026-08-29 17:36 UTCGHSA enrichment
  5. 2026-08-29 05:12 UTCEG score recompute
  6. 2026-08-29 05:11 UTCGHSA enrichment
  7. 2026-08-28 21:42 UTCEPSS rescore
  8. 2026-08-28 17:33 UTCGHSA enrichment
  9. 2026-08-28 05:52 UTCGHSA enrichment
  10. 2026-08-27 18:16 UTCEG score recompute
  11. 2026-08-27 18:16 UTCGHSA enrichment
  12. 2026-08-27 14:25 UTCEPSS rescore
  13. 2026-08-27 05:29 UTCGHSA enrichment
  14. 2026-08-26 17:49 UTCEG score recompute
  15. 2026-08-26 17:49 UTCGHSA enrichment
  16. 2026-08-26 14:47 UTCEPSS rescore
  17. 2026-08-26 05:10 UTCGHSA enrichment
  18. 2026-08-25 17:34 UTCEG score recompute
  19. 2026-08-25 17:33 UTCGHSA enrichment
  20. 2026-08-25 13:49 UTCEPSS rescore
  21. 2026-08-25 05:59 UTCEG score recompute
  22. 2026-08-25 05:58 UTCGHSA enrichment
  23. 2026-08-24 18:24 UTCEG score recompute
  24. 2026-08-24 18:24 UTCGHSA enrichment
  25. 2026-08-24 18:21 UTCNVD updateCVSS v4 → 2.1
Show 12 more
  1. 2026-08-24 18:16 UTCEG score recompute
  2. 2026-08-24 18:16 UTCGHSA enrichment
  3. 2026-08-24 18:16 UTCMITRE cvelistV5CVSS v4 → 5.3
  4. 2026-08-24 16:46 UTCEG score recompute
  5. 2026-08-24 16:46 UTCGHSA enrichment
  6. 2026-08-24 14:18 UTCEPSS rescore
  7. 2026-08-24 13:14 UTCEG score recompute
  8. 2026-08-24 13:14 UTCGHSA enrichment
  9. 2026-08-24 01:38 UTCEG score recompute
  10. 2026-08-24 01:37 UTCNVD updateCVSS v4 → 2.1
  11. 2026-08-24 00:16 UTCEG score recompute
  12. 2026-08-24 00:15 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-78157?
CVE-2026-78157 is a high vulnerability published on August 24, 2026. A vulnerability was detected in Open5GS 2.8.0. This affects the function pcrfrxaar_cb of the file src/pcrf/pcrf-rx-path.c of the component Rx AA-Request Handler. Performing a manipulation results in out-of-bounds read. It is possible to initiate the attack remotely. The patch is named…
When was CVE-2026-78157 disclosed?
CVE-2026-78157 was first published in the National Vulnerability Database on August 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-78157 actively exploited?
CVE-2026-78157 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 86.6% of all scored CVEs.
What is the CVSS score of CVE-2026-78157?
CVE-2026-78157 has a CVSS v3 base score of 7.4 (NVD).
How do I remediate CVE-2026-78157?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-78157, 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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