7.1

CVE-2025-30646

Media report

A Signed to Unsigned Conversion Error vulnerability in the Layer 2 Control Protocol daemon (l2cpd) of Juniper Networks Junos OS and Juniper Networks Junos OS Evolved allows an unauthenticated adjacent attacker sending a specifically malformed LLDP TLV to cause the l2cpd process to crash and restart, causing a Denial of Service (DoS).  Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition.

When an LLDP telemetry subscription is active, receipt of a specifically malformed LLDP TLV causes the l2cpd process to crash and restart.



This issue affects:

Junos OS: 


  *  All versions before 21.2R3-S9, 
  *  from 21.4 before 21.4R3-S10, 
  *  from 22.2 before 22.2R3-S6, 
  *  from 22.4 before 22.4R3-S6, 
  *  from 23.2 before 23.2R2-S3, 
  *  from 23.4 before 23.4R2-S4, 
  *  from 24.2 before 24.2R2; 




Junos OS Evolved: 



  *  All versions before 21.4R3-S10-EVO,
  *  from 22.2-EVO before 22.2R3-S6-EVO, 
  *  from 22.4-EVO before 22.4R3-S6-EVO, 
  *  from 23.2-EVO before 23.2R2-S3-EVO, 
  *  from 23.4-EVO before 23.4R2-S4-EVO, 
  *  from 24.2-EVO before 24.2R2-EVO.

Verknüpft mit AI von unstrukturierten Daten zu bestehenden CPE der NVD
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Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
VendorJuniper Networks
≫
Product Junos OS
Default Statusunaffected
Version < 21.2R3-S9
Version 0
Status affected
Version < 21.4R3-S10
Version 21.4
Status affected
Version < 22.2R3-S6
Version 22.2
Status affected
Version < 22.4R3-S6
Version 22.4
Status affected
Version < 23.2R2-S3
Version 23.2
Status affected
Version < 23.4R2-S4
Version 23.4
Status affected
Version < 24.2R2
Version 24.2
Status affected
VendorJuniper Networks
≫
Product Junos OS Evolved
Default Statusunaffected
Version < 21.4R3-S10-EVO
Version 0
Status affected
Version < 22.2R3-S6-EVO
Version 22.2-EVO
Status affected
Version < 22.4R3-S6-EVO
Version 22.4-EVO
Status affected
Version < 23.2R2-S3-EVO
Version 23.2-EVO
Status affected
Version < 23.4R2-S4-EVO
Version 23.4-EVO
Status affected
Version < 24.2R2-EVO
Version 24.2-EVO
Status affected
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 0.03% 0.084
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
sirt@juniper.net 6.5 2.8 3.6
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
sirt@juniper.net 7.1 0 0
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/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:Y/R:A/V:C/RE:M/U:X
CWE-195 Signed to Unsigned Conversion Error

The product uses a signed primitive and performs a cast to an unsigned primitive, which can produce an unexpected value if the value of the signed primitive can not be represented using an unsigned primitive.