CVE-2026-8186 Details
Description
A vulnerability was detected in Open5GS up to 2.7.7. This affects the function ogs_sbi_client_send_via_scp_or_sepp in the library lib/sbi/client.c of the component NF. Performing a manipulation results in out-of-bounds read. The attack is possible to be carried out remotely. The patch is named d5bc487fcf9ea87d2b03f2ef95123af344773bfb. It is suggested to install a patch to address this issue.
A vulnerability allowing for an out-of-bounds read has been identified in Open5GS versions through 2.7.7. This issue resides in the NF component, specifically within the function 'ogs_sbi_client_send_via_scp_or_sepp' in the file 'lib/sbi/client.c'. The vulnerability can be exploited remotely, leading to a denial-of-service condition by causing the Open5GS UPF process to crash. This crash occurs when the system receives crafted or malformed GTP-U traffic on UDP port 2152, disrupting active PDU sessions.
Users are advised to update to Open5GS version 2.7.8 or later, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 11, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/open5gs/open5gs/issues/4491 | CISA-ADP | ExploitIssue Tracking |
| https://github.com/open5gs/open5gs/ | [email protected] | Product |
| https://github.com/open5gs/open5gs/commit/d5bc487fcf9ea87d2b03f2ef95123af344773bfb | [email protected] | Patch |
| https://github.com/open5gs/open5gs/issues/4491 | [email protected] | ExploitIssue Tracking |
| https://github.com/open5gs/open5gs/pull/4496 | [email protected] | Issue TrackingPatch |
| https://vuldb.com/submit/800024 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/vuln/362338 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/vuln/362338/cti | [email protected] | Permissions RequiredVDB Entry |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | [email protected] |
| CWE-125 | Out-of-bounds Read | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| open5gs open5gs | <= 2.7.7 |
CPE
Remediation
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Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 24, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 13, 2026 | Initial Analysis | [email protected] |
| May 11, 2026 | CVE Modified | CISA-ADP |
| May 9, 2026 | New CVE Received | [email protected] |