The pyasn1 library used in Glances is vulnerable to a Denial of Service (DoS) attack due to unbounded recursion when decoding ASN.1 data with deeply nested indefinite-length SEQUENCE or SET tags. An attacker can craft a small payload that causes the decoder to recursively call itself until the Python interpreter crashes with a RecursionError or exhausts system memory, crashing the host application. This affects multiple versions of Glances prior to fixed releases. The vulnerability allows remote attackers to crash services parsing untrusted ASN.1 data, resulting in service disruption.