CVE-2025-8799
Published: 10 August 2025
Summary
CVE-2025-8799 is a medium-severity Improper Resource Shutdown or Release (CWE-404) vulnerability in Open5Gs Open5Gs. Its CVSS base score is 5.5 (Medium).
Operationally, ranked in the top 19.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
A vulnerability has been identified in Open5GS versions up to 2.7.5 within the AMF component. Specifically, improper handling in the functions amf_npcf_am_policy_control_build_create and amf_nsmf_pdusession_build_create_sm_context located in src/amf/npcf-build.c can be triggered through manipulation of inputs, resulting in a denial of service condition. The issue is tracked as CWE-404 and carries a CVSS 4.0 score of 5.5 reflecting a network-accessible vector with low attack complexity.
An unauthenticated remote attacker can exploit the flaw by sending crafted requests to the AMF, causing service disruption without requiring user interaction or elevated privileges. Public disclosure of an exploit has occurred, indicating that proof-of-concept code is available for potential use against unpatched deployments.
The project maintainers have addressed the issue in Open5GS 2.7.6 via commit cf63dd63197bf61a4b041aa364ba6a6199ab15e4. Upgrading to this release is the recommended mitigation, with the corresponding release notes and patch available through the project's GitHub repository.
The associated EPSS score remains flat at 0.0139 with no material increase observed after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-24081
Vulnerability details
A vulnerability was identified in Open5GS up to 2.7.5. Affected by this vulnerability is the function amf_npcf_am_policy_control_build_create/amf_nsmf_pdusession_build_create_sm_context of the file src/amf/npcf-build.c of the component AMF. The manipulation leads to denial of service. The attack can be launched remotely. The exploit…
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has been disclosed to the public and may be used. Upgrading to version 2.7.6 is able to address this issue. The patch is named cf63dd63197bf61a4b041aa364ba6a6199ab15e4. It is recommended to upgrade the affected component.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Contingency plan updates incorporate proper resource shutdown and release steps, preventing attackers from leveraging incomplete cleanup during recovery scenarios.
Mandates explicit shutdown of the network connection at session conclusion, directly addressing improper resource release.
Requires proper shutdown/release procedures that include overwriting or isolating data to block unintended transfer via reused system objects.
Procedures can mandate orderly shutdown or release of resources when failures occur, preventing improper resource handling after a fault.