CVE-2025-26265: A segmentation fault in openairinterface5g v2.1.0 allows attackers to cause a Denial of Service (DoS) via a crafted UE C

CVE-2025-26265 is a bug in openairinterface5g (software for 5G networks) version 2.1.0 that causes a segmentation fault (a crash when the program tries to access memory it shouldn't). Attackers can exploit this by sending a specially crafted UE Context Modification response (a message in the 5G network setup process) to crash the system and cause a Denial of Service (DoS, making the service unavailable to legitimate users). The underlying issue is improper memory buffer handling (the software doesn't properly check the boundaries of memory it's using).