Vulnerability DatabaseCVE-2026-108105
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CVE-2026-108105
Published:October 09, 2026
Updated:October 13, 2026
Open5GS through 2.8.0 contains a reachable assertion vulnerability in mme_gn_handle_sgsn_context_request() that allows remote unauthenticated attackers to crash the MME via malformed SGSN Address IEs. Attackers sending GTPv1-C traffic from a configured SGSN address with a known UE IMSI or P-TMSI can supply an invalid address length to terminate open5gs-mmed, denying service to all subscribers.
Related Resources (7)
https://github.com/open5gs/open5gs/security/advisories/GHSA-9crh-64c8-56q6
https://www.vulncheck.com/advisories/open5gs-through-2.8.0-mme-reachable-assertion-via-gtpv1-sgsn-context-request
https://github.com/open5gs/open5gs/blob/v2.8.0/src/mme/mme-gn-handler.c#L208-L217
https://github.com/open5gs/open5gs/commit/346ce7a5e5cf2812bac3af042b5afba35bcf4f89
https://nvd.nist.gov/vuln/detail/CVE-2026-108105
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/108xxx/CVE-2026-108105.json
https://github.com/open5gs/open5gs
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CVSS v4
Base Score:
8.2
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.9
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Reachable Assertion
CWE-617
EPSS
Base Score:
0.52