CVE-2025-21602 — Improper Handling of Exceptional Conditions in Networks Junos OS

CWE-755 — Improper Handling of Exceptional Conditions4 documents4 sources

Severity

7.1HIGHNVD

EPSS

0.1%

top 68.31%

CISA KEV

Not in KEV

Exploit

No known exploits

Affected products

Juniper Networks Junos OS Juniper Networks Junos OS Evolved Juniper Junos +1 more

Timeline

PublishedJan 9

Description

An Improper Handling of Exceptional Conditions vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker sending a specific BGP update packet to cause rpd to crash and restart, resulting in a Denial of Service (DoS). Continuous receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue affects iBGP and eBGP, and both IPv4 and IPv6 are affected by this vulnerab…

CVSS vector

CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L

Affected Packages4 packages

▶CVEListV5juniper_networks/junos_os_evolved21.4 — 21.4R3-S9-EVO+6

▶NVDjuniper/junos_os_evolved8 versions+7

▶CVEListV5juniper_networks/junos_os21.4 — 21.4R3-S9+6

▶NVDjuniper/junos8 versions+7

🔴Vulnerability Details

CVEList

Junos OS and Junos OS Evolved: Receipt of specially crafted BGP update packet causes RPD crash↗2025-01-09

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GHSA

GHSA-v85m-7mw4-4363: An Improper Handling of Exceptional Conditions vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved al↗2025-01-09

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📋Vendor Advisories

Juniper

CVE-2025-21602: An Improper Handling of Exceptional Conditions vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved al↗2025-01-09

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