Quick answers
- Is CVE-2026-82549 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-82549 being exploited in the wild.
- How severe is CVE-2026-82549?
- High severity, with a CVSS score of 8.3, published 30 August 2026.
- Which products and versions are affected?
- Linux Foundation Magma 1.9.0.
- Is there a fix for CVE-2026-82549?
- 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-2026-82549 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-82549?
- Check whether you run Linux Foundation Magma 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
The vulnerability exists in the SecurityModeComplete handler of Magma's Access Gateway (AGW) AMF component, which fails to properly validate UE-declared integrity algorithm capabilities. During 5G initial registration, a UE can declare support for only IA0 (no integrity algorithm), which the AMF incorrectly accepts and allows to proceed with a zero MAC value, violating 3GPP specifications. This is an improper validation vulnerability affecting a critical authentication handshake component. The attack is remotely triggered via crafted NAS packets during the initial registration flow and requires no authentication. The exploit is publicly available. Patch status is unknown from the advisory.
Affected products
- Linux Foundation Magma 1.9.0
Timeline
- 2026-07-15: disclosed
- 2026-08-30: advisory