CVE-2025-15176

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2025-12-29. NVD baseline CVSS 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 5.3Exploit: Elevated riskExposed: 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 up to 2.7.5. This affects the function decode_ipv6_header/ogs_pfcp_pdr_rule_find_by_packet of the file lib/pfcp/rule-match.c of the component PFCP Session Establishment Request Handler. Executing a manipulation can lead to reachable assertion. It is possible to launch the attack remotely. The exploit has been published and may be used. This patch is called b72d8349980076e2c033c8324f07747a86eea4f8. Applying a patch is advised to resolve this issue.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
55(Attend)
EG Risk 55/100SSVC: 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
Severity53% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
1%
EPSS %ILE
48%
KEV
Not listed

Published

December 29, 2025

Last Modified

February 24, 2026

Advisory Details (5)

Auto-updated Aug 8, 2026
Patch available. Sources: github_commit.
generic

[Bug]: UPF crash from IPv6 Payload Length=0 with non-zero Next Header · Issue #4180 · open5gs/open5gs · GitHub

https://github.com/open5gs/open5gs/issues/4180#issuecomment-3615555671
generic

[Bug]: UPF crash from IPv6 Payload Length=0 with non-zero Next Header · Issue #4180 · open5gs/open5gs · GitHub

https://github.com/open5gs/open5gs/issues/4180#issue-3666760066
generic

[Bug]: UPF crash from IPv6 Payload Length=0 with non-zero Next Header · Issue #4180 · open5gs/open5gs · GitHub

https://github.com/open5gs/open5gs/issues/4180
github_commit Patch Available

commit b72d83499800 (open5gs/open5gs)

Patch available: open5gs/open5gs v2.7.7 (contains commit b72d83499800)

https://github.com/open5gs/open5gs/commit/b72d8349980076e2c033c8324f07747a86eea4f8
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/

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 29× 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.

Showing the most recent 100 of 149 total refreshes for this CVE.

  1. 2026-09-18 19:27 UTCEPSS rescore
  2. 2026-09-16 14:06 UTCEPSS rescore
  3. 2026-09-16 05:13 UTCEPSS rescore
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  1. 2026-08-24 14:15 UTCEPSS rescore
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  17. 2026-08-09 22:33 UTCGHSA enrichment
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  19. 2026-08-08 05:01 UTCEG score recompute
  20. 2026-08-08 05:01 UTCGHSA enrichment
  21. 2026-08-07 16:26 UTCEPSS rescore
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  23. 2026-08-06 06:57 UTCEG score recompute
  24. 2026-08-06 06:57 UTCGHSA enrichment
  25. 2026-08-05 19:16 UTCEPSS rescore
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  39. 2026-07-23 11:49 UTCOSV refresh
  40. 2026-07-23 02:49 UTCEG score recompute
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Frequently asked(5)

What is CVE-2025-15176?
CVE-2025-15176 is a medium vulnerability published on December 29, 2025. A flaw has been found in Open5GS up to 2.7.5. This affects the function decodeipv6header/ogspfcppdrrulefindbypacket of the file lib/pfcp/rule-match.c of the component PFCP Session Establishment Request Handler. Executing a manipulation can lead to reachable assertion. It is possible to launch the…
When was CVE-2025-15176 disclosed?
CVE-2025-15176 was first published in the National Vulnerability Database on December 29, 2025, with the most recent update on February 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-15176 actively exploited?
CVE-2025-15176 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 52.4% of all scored CVEs.
What is the CVSS score of CVE-2025-15176?
CVE-2025-15176 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2025-15176?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-15176, 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.

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