CVE Feed

    Dashboard / CVE / CVE-2026-33801

    CVE-2026-33801

    An Improper Check for Unusual or Exceptional Conditions vulnerability in the routing protocol daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker sending a specific BGP update over an established BGP session to cause a Denial-of-Service (DoS). Upon receipt of a specifically malformed non-inet/inet6 unicast BGP update, an RPD crash and restart is triggered, which will cause a complete service outage until routing has reconverged. The rpd crash occurs before the update can be readvertised, so there is no downstream propagation. This issue affects: * Junos OS versions 25.2 before 25.2R2; * Junos OS Evolved versions 25.2 before 25.2R2-EVO. This issue doesn't affect Junos OS versions before 25.2R1 nor Junos OS Evolved versions before 25.2R1-EVO.

    Published:Jul 9, 2026
    Last Modified:Jul 10, 2026
    EPS:Jul 9, 2026
    EPSS Score:0.00281
    CVSS Score:6.5

    Affected Products

    Vendor
    Juniper Networks
    Product
    Junos Os
    Vendor
    Juniper Networks
    Product
    Junos Os Evolved

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-57054 (CVSS 6.9) — A Use of Incorrectly-Resolved Name or Reference vulnerability in the URL filtering plugin of Juniper Networks …
    CVE-2026-57032 (CVSS 7.1) — An Improper Handling of Undefined Parameters vulnerability in the packet forwarding engine (pfe) of Juniper Ne…
    CVE-2026-57031 (CVSS 5.3) — An Improper Check for Unusual or Exceptional Conditions vulnerability in the packet forwarding engine (PFE) of…
    CVE-2026-57030 (CVSS 8.2) — A Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in…
    CVE-2026-57027 (CVSS 7.1) — A Missing Release of Memory after Effective Lifetime vulnerability in the packet forwarding engine (pfe) of Ju…
    CVE-2026-57026 (CVSS 8.7) — An Improper Validation of Syntactic Correctness of Input vulnerability in the SIP plugin of Juniper Networks J…
    CVE-2026-57025 (CVSS 6.8) — A Return of Pointer Value Outside of Expected Range vulnerability in the fileio library of Juniper Networks Ju…
    CVE-2026-57024 (CVSS 6.9) — A Use of Multiple Resources with Duplicate Identifier vulnerability in the IKE daemon (iked) of Juniper Networ…
    CVE-2026-57023 (CVSS 8.7) — An Improper Validation of Specified Quantity in Input vulnerability in the TCP proxy plugin of Juniper Network…
    CVE-2026-57022 (CVSS 8.2) — An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High