A vulnerability was determined in Open5GS up to 2.7.7. Affected by this issue is the function handle_scp_info in the library lib/sbi/nnrf-handler.c of the component Shared NF-profile Parser. This manipulation causes out-of-bounds write. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. To fix this issue, it is recommended to deploy a patch.
Security readout for executives and security teams
Plain-English summary
Open5GS versions 2.7.0 through 2.7.7 have a remotely reachable parsing flaw that can write outside expected memory bounds. The public sources describe likely denial-of-service impact, not confirmed data theft or full system compromise. Exploit details are public, but CISA KEV listing is not indicated in the supplied sources.
Executive priority
Treat this as a moderate operational risk for Open5GS-based mobile core environments. Prioritize production systems, exposed lab systems, and any deployment where untrusted parties can interact with NF registration flows.
Technical view
The flaw is in handle_scp_info in lib/sbi/nnrf-handler.c, within the Shared NF-profile Parser. Manipulating SCP information in an NF profile can trigger an out-of-bounds write. CVSS 4.0 is 5.3: network reachable, low complexity, low privileges, no user interaction, with low availability impact.
Likely exposure
Exposure is limited to environments running Open5GS 2.7.0 through 2.7.7. Risk is highest where 5G core service interfaces or NF profile registration paths are reachable by untrusted or weakly controlled network functions.
Exploitation context
The supplied VulDB description says an exploit has been publicly disclosed and may be used. The CVSS vector requires low privileges. The source bundle does not show KEV inclusion or confirmed active exploitation in the wild.
Researcher notes
Evidence points to an out-of-bounds write causing denial of service, but the supplied sources do not establish broader code execution impact. Avoid assuming active exploitation or a specific fixed version unless confirmed by Open5GS guidance.
Mitigation direction
Upgrade Open5GS using vendor-confirmed patched guidance when available.
Restrict SBI, NRF, and NF registration interfaces to trusted network paths.
Limit credentials able to register or modify NF profiles.
Monitor Open5GS services for crashes or unexpected restarts.
Review the GitHub issue and VulDB entry for patch status.
Validation and detection
Inventory Open5GS deployments and confirm exact running versions.
Flag any Open5GS 2.7.0 through 2.7.7 systems as affected.
Check whether NRF or NF-profile paths are exposed beyond trusted components.
Review service logs for crashes around NF registration activity.
Confirm applied fixes against vendor or project guidance.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
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We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.