How severe is CVE-2026-8186?

CVE-2026-8186 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2026-8186 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-8186?

CVE-2026-8186 affects Open5gs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-8186?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-8186 have an EU (EUVD) identifier?

Yes. CVE-2026-8186 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28912.

When was CVE-2026-8186 published?

CVE-2026-8186 was published on 2026-05-09 and last updated on 2026-06-17.

CVE-2026-8186

CVE-2026-8186 is a medium-severity vulnerability in Open5gs with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
CVSS v4: 6.9
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-28912
Weakness: CWE-119
Affected product: Open5gs
Published: 2026-05-09
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-8186?: 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.
How severe is CVE-2026-8186?: CVE-2026-8186 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2026-8186 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-8186?: CVE-2026-8186 affects Open5gs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-8186?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-8186 have an EU (EUVD) identifier?: Yes. CVE-2026-8186 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28912.
When was CVE-2026-8186 published?: CVE-2026-8186 was published on 2026-05-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*

More vulnerabilities in Open5gs

CVE-2024-40130 — Critical (CVSS 9.8): open5gs v2.6.4 is vulnerable to Buffer Overflow. via /lib/core/abts.c.
CVE-2024-40129 — Critical (CVSS 9.8): Open5GS v2.6.4 is vulnerable to Buffer Overflow. via /lib/pfcp/context.c.
CVE-2021-28122 — Critical (CVSS 9.8): A request-validation issue was discovered in Open5GS 2.1.3 through 2.2.x before 2.2.1. The WebUI component allows an…
CVE-2021-25863 — High (CVSS 8.8): Open5GS 2.1.3 listens on 0.0.0.0:3000 and has a default password of 1423 for the admin account.
CVE-2024-24429 — High (CVSS 8.6): A reachable assertion in the nas_eps_send_emm_to_esm function of Open5GS <= 2.6.4 allows attackers to cause a Denial of…
CVE-2024-34235 — High (CVSS 8.6): Open5GS MME versions <= 2.6.4 contains an assertion that can be remotely triggered via a malformed ASN.1 packet over…

All CVEs affecting Open5gs →

Other CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities

CVE-2026-2778 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability was fixed in…
CVE-2026-2776 — Critical (CVSS 10.0): Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software. This vulnerability…
CVE-2025-1866 — Critical (CVSS 10.0): Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in warmcat libwebsockets allows…
CVE-2022-27625 — Critical (CVSS 10.0): A vulnerability regarding improper restriction of operations within the bounds of a memory buffer is found in the…
CVE-2022-27624 — Critical (CVSS 10.0): A vulnerability regarding improper restriction of operations within the bounds of a memory buffer is found in the…
CVE-2020-11896 — Critical (CVSS 10.0): The Treck TCP/IP stack before 6.0.1.66 allows Remote Code Execution, related to IPv4 tunneling.

Browse all CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) vulnerabilities →