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CVE-2026-33797

Junos OS and Junos OS Evolved: An attacker sending a specific genuine BGP packet causes a BGP reset PUBLISHED

Description (CNA)

An Improper Input Validation vulnerability in Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker, sending a specific genuine BGP packet in an already established BGP session to reset only that session causing a Denial of Service (DoS). An attacker repeatedly sending the packet will sustain the Denial of Service (DoS).This issue affects Junos OS: * 25.2 versions before 25.2R2 This issue does not affect Junos OS versions before 25.2R1. This issue affects Junos OS Evolved: * 25.2-EVO versions before 25.2R2-EVO This issue does not affect Junos OS Evolved versions before 25.2R1-EVO. eBGP and iBGP are affected. IPv4 and IPv6 are affected.

Affected (CNA)

Vendor / productVersions
Juniper Networks / Junos OSaffected 25.2 before 25.2R2; unaffected 0 before 25.2R1
Juniper Networks / Junos OS Evolvedaffected 25.2 before 25.2R2-EVO; unaffected 0 before 25.2R1-EVO

CWE

CWE-20

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.