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    CVE-2026-8121

    A vulnerability has been found in Open5GS up to 2.7.7. The impacted element is the function ogs_sbi_parse_plmn_list in the library /lib/sbi/conv.c of the component NSSF. The manipulation leads to denial of service. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

    Published:May 8, 2026
    Last Modified:May 8, 2026
    EPS:May 8, 2026
    EPSS Score:0.00057
    CVSS Score:4.3

    Affected Products

    Vendor
    Open5gs
    Product
    Open5gs

    Exploits

    https://github.com/open5gs/open5gs/issues/4433https://vuldb.com/submit/808422

    Related CVEs

    CVE-2026-86212 (CVSS 2.1) — A vulnerability has been found in Open5GS 2.7.7/2.8.0. This vulnerability affects unknown code of the componen…
    CVE-2026-75438 (CVSS 7.5) — Buffer Overflow vulnerability in Open5GS v2.7.7 allows a remote attacker to cause a denial of service via the …
    CVE-2026-82590 (CVSS 5.3) — A weakness has been identified in Open5GS up to 2.7.7. The affected element is the function smf_nudm_sdm_handl…
    CVE-2026-82589 (CVSS 2.1) — A security flaw has been discovered in Open5GS up to 2.7.7. Impacted is the function amf_namf_comm_handle_n1_n…
    CVE-2026-82588 (CVSS 5.3) — A vulnerability was identified in Open5GS up to 2.7.7. This issue affects some unknown processing of the file …
    CVE-2026-82587 (CVSS 2.1) — A vulnerability was determined in Open5GS up to 2.7.7. This vulnerability affects the function amf_namf_comm_d…
    CVE-2026-30046 (CVSS 7.5) — A reachable assertion vulnerability in the NUDM-UECM interface of Open5GS v2.7.6 allows attackers to cause a D…
    CVE-2026-30047 (CVSS 7.5) — A reachable assertion vulnerability in the /nsmf-pdusession/v1/sm-contexts component of Open5GS v2.7.6 allows …
    CVE-2026-30045 (CVSS 7.5) — An integer overflow in the /nnrf-disc/v1/nf-instances component of open5gs v2.7.6 allows attackers to cause a …
    CVE-2026-37198 (CVSS 7.5) — An integer overflow in the SMF component of Open5GS v2.7.6 allows attackers to cause a Denial of Service (DoS)…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High