Quick answers
- Is CVE-2026-108105 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-108105 being exploited in the wild.
- How severe is CVE-2026-108105?
- Medium severity, with a CVSS score of 5.9, published 9 October 2026.
- Which products and versions are affected?
- Open5GS through 2.8.0.
- Is there a fix for CVE-2026-108105?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-108105 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-108105?
- Check whether you run Open5GS at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A reachable assertion vulnerability exists in the mme_gn_handle_sgsn_context_request() function when processing GTPv1-C packets with invalid SGSN Address Information Elements (IEs). Remote unauthenticated attackers with network access to the GN interface and knowledge of a valid SGSN address and subscriber IMSI/P-TMSI can trigger an assertion failure by supplying an invalid address length, crashing the open5gs-mmed process. A fix exists in versions after 2.8.0.
Affected products
- Open5GS Open5GS through 2.8.0
Timeline
- 2026-10-09: disclosed