CVE-2026-108105

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.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/open5gs/open5gs
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://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/security/advisories/GHSA-9crh-64c8-56q6

Configurations

No configuration.

History

09 Oct 2026, 18:17

Type	Values Removed	Values Added
References	~~() https://github.com/open5gs/open5gs/security/advisories/GHSA-9crh-64c8-56q6 -~~	() https://github.com/open5gs/open5gs/security/advisories/GHSA-9crh-64c8-56q6 -

09 Oct 2026, 15:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-09 15:17

Updated : 2026-10-09 18:17

NVD link : CVE-2026-108105

Mitre link : CVE-2026-108105

CVE.ORG link : CVE-2026-108105

JSON object : View

Products Affected

No product.

CWE

CWE-617

Reachable Assertion

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