CVE-2026-128237

MEDIUMCVSS 5.30% EPSS

Scapy before 2.8.0 contains a denial of service vulnerability in BER_num_dec() and BERcodec_OID.do_dec() that allows remote attackers to exhaust CPU by supplying oversized OID arcs. Attackers can send ASN.1/BER data with many base-128 continuation bytes to cause quadratic CPU consumption or an uncaught ValueError crash on Python 3.11+.

Published 2026-11-13 · last modified 2026-11-13

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Ncerio by BeyondNets · data from NVD, CISA KEV, EPSS.