Devilray: A Systematic Adversarial Model Revealing Blind Spots in Fake Base Station Detection

Fake Base Station FBS detection has been a critical focus of cellular security research for over two decades. However, significant financial and regulatory barriers to accessing commercial FBS C-FBS devices have limited direct visibility into real-world operations, forcing detection systems to be...

Ella Core has handover failures during concurrent Security Mode Command

Summary Ella Core didn't enforce security rules on concurrent running of security procedures defined in TS 33.501 §6.9.5.1 — it could send a NAS Security Mode Command while an N2 handover was still pending and vice versa. Impact Concurrent Security Mode Command and N2 handover produce a KgNB...

GHSA-MC29-HMX6-856Q Ella Core has handover failures during concurrent Security Mode Command

Summary Ella Core didn't enforce security rules on concurrent running of security procedures defined in TS 33.501 §6.9.5.1 — it could send a NAS Security Mode Command while an N2 handover was still pending and vice versa. Impact Concurrent Security Mode Command and N2 handover produce a KgNB...

Improperly Implemented Security Check for Standard

Overview Affected versions of this package are vulnerable to Improperly Implemented Security Check for Standard due to improper verification of UE Security Capabilities in the PathSwitchRequest messages. An attacker can alter stored security capabilities for any user equipment by sending a crafte...

PT-2026-39669

Name of the Vulnerable Software and Affected Versions Ella Core versions prior to 1.10.0 Description Ella Core, a 5G core for private networks, fails to verify UE Security Capabilities received in NGAP 'PathSwitchRequest' messages against locally stored values. This allows a malicious gNB to...

Improperly Implemented Security Check for Standard

Overview Affected versions of this package are vulnerable to Improperly Implemented Security Check for Standard in the handlePathSwitchRequestMain function. An attacker can cause persistent service disruption and corrupt internal security context by sending a crafted PathSwitchRequest message fro...

CVE-2026-20449

In Modem, there is a possible system crash due to a heap buffer overflow. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch I...

CVE-2026-20450

CVE-2026-20450 affects the Modem component. The issue is a crash caused by incorrect error handling, which can lead to remote denial of service if a user equipment connects to a rogue base station controlled by an attacker. No user interaction is required; exploitation is scoped to adjacent acces...

CVE-2026-20450

In Modem, there is a possible system crash due to incorrect error handling. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch...

CVE-2026-20450

In Modem, there is a possible system crash due to incorrect error handling. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch...

CVE-2026-20449

CVE-2026-20449 concerns a vulnerability in Modem where a heap buffer overflow can cause a system crash, leading to remote denial of service. Exploitation could occur if a device connects to a rogue base station controlled by an attacker, with no additional execution privileges and no user interac...

CVE-2026-20449

In Modem, there is a possible system crash due to a heap buffer overflow. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch I...

EUVD-2026-26889

In Modem, there is a possible system crash due to a heap buffer overflow. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch I...

CVE-2026-20449

In Modem, there is a possible system crash due to a heap buffer overflow. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch I...

CVE-2026-20449

In Modem, there is a possible system crash due to a heap buffer overflow. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch I...

PT-2026-36767

Name of the Vulnerable Software and Affected Versions Modem affected versions not specified Description A heap buffer overflow in the system can cause a system crash, potentially leading to a remote denial of service. This occurs if a User Equipment UE connects to a rogue base station controlled ...

PT-2026-36768

Name of the Vulnerable Software and Affected Versions MediaTek MT2735 affected versions not specified Description Incorrect error handling in the Modem can cause a system crash. This allows a remote denial of service if a User Equipment UE connects to a rogue base station controlled by an attacke...

CVE-2026-7583 Open5GS BSF context.c bsf_sess_find_by_ipv6prefix denial of service

A flaw has been found in Open5GS up to 2.7.7. This issue affects the function bsfsessfindbyipv6prefix of the file /src/bsf/context.c of the component BSF. This manipulation of the argument ipv6Prefix causes denial of service. It is possible to initiate the attack remotely. The exploit has been...

CVE-2026-20431

In Modem, there is a possible system crash due to a logic error. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID:...

CVE-2026-20432

In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of privilege, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is needed for exploitation...