CVE-2026-119197 is a denial of service vulnerability in pyasn1 versions up to 0.6.4 used by Glances. It arises from a quadratic-complexity loop in decoding binary-encoded ASN.1 REAL values with large mantissas, causing excessive CPU consumption. The flaw affects BER, CER, and DER decoders. An attacker supplying crafted ASN.1 REAL data to an affected decoder can cause CPU exhaustion during decoding. The issue is fixed in pyasn1 0.6.5. Users should upgrade to this version or apply input restrictions to mitigate the risk.