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CVE-2026-128238

MEDIUM CVSS: 5.3 Published: 2026-11-13 Modified: 2026-11-13

Description

Scapy before 2.8.0 contains an uncontrolled recursion vulnerability in the BER/ASN.1 decoder in scapy/asn1/ber.py that allows unauthenticated remote attackers to crash parsing applications. Attackers can send a single 833-byte packet with 250 nested ASN.1 SEQUENCE structures to trigger an unhandled RecursionError, terminating TLS, SNMP, X.509, or LDAP parsers even with safe=True.

Affected Platforms

Unknown

Weakness Type

CWE-674

References