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Fencer Vulns
medium 6.5

CVE-2025-30653 json

Junos OS and Junos OS Evolved: LSP flap in a specific MPLS scenario leads to rpd crash

published 2025-04-09 19 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-10514

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 16%
public exploits
0
none known

Summary

An Expired Pointer Dereference vulnerability in Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause Denial of Service (DoS).On all Junos OS and Junos OS Evolved platforms, when an MPLS Label-Switched Path (LSP) is configured with node-link-protection and transport-class, and an LSP flaps, rpd crashes and restarts. Continuous flapping of LSP can cause a sustained Denial of Service (DoS) condition.

This issue affects:

Junos OS:

* All versions before 22.2R3-S4,

* 22.4 versions before 22.4R3-S2,

* 23.2 versions before 23.2R2,

* 23.4 versions before 23.4R2.

Junos OS Evolved:

* All versions before 22.2R3-S4-EVO,

* 22.4-EVO versions before 22.4R3-S2-EVO,

* 23.2-EVO versions before 23.2R2-EVO,

* 23.4-EVO versions before 23.4R2-EVO.

Patch / fix

  • Juniper Networks Junos OS 22.2R3-S4, 22.4R3-S2, 23.2R2, 23.4R2
  • Juniper Networks Junos OS Evolved 22.2R3-S4-EVO, 22.4R3-S2-EVO, 23.2R2-EVO, 23.4R2-EVO

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
19 mo ago

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA 4.0 6.0 CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L
CNA 4.0 6.0 CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

  • Juniper Networks Junos OS
  • Juniper Networks Junos OS Evolved

Classification

Weakness
  • CWE-825 Expired Pointer Dereference

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.