CVE-2026-108105

Medium

Description

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.

SeverityMedium

CVSS5.9

Exploit probability—

ProductOpen5gs

PublishedOct 9, 2026

First seenOct 9, 2026

Weakness typeCWE-617CWE-617

How to fix

Patches

github.com/open5gs/open5gs/commit/346ce7a5e5cf2812bac3af042b5afba35bcf4f89

Vendor advisories

github.com/open5gs/open5gs/security/advisories/GHSA-9crh-64c8-56q6

Affected products

Product	Affected versions	Fixed in
open5gs open5gs	v ≤ 2.8.0	—

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