tag
Citrix
CVE-2026-8452
network
CRITICAL 9.8
Citrix NetScaler ADC/Gateway -- Pre-Auth SAML PrefixList Heap Overflow to RCE (CVE-2026-8452)
CVE-2026-8452 is a pre-authentication heap buffer overflow in the Citrix NetScaler ADC and Gateway SAML authentication handler. The vulnerability exists in the XML Signature Canonicalization (C14N) processing of the PrefixList attribute within SAML responses.…
Patched
2026-08-16
CVE-2026-8451
network
HIGH 7.5
EPSS 16%
Citrix NetScaler ADC/Gateway Pre-Auth SAML Memory Overread — "CitrixBleed"-style Leak (CVE-2026-8451)
CVE-2026-8451 is a pre-authentication out-of-bounds memory read in Citrix NetScaler ADC/Gateway's SAML request parser, in the same vulnerability class as the infamous 2023 "CitrixBleed" (CVE-2023-4966). By posting a specially-sized, malformed SAMLRequest to…
Unverified
2026-07-03