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TI-2024-26484 Aliases CVE-2024-39550GHSA-938g-xvpf-6653

Junos OS: MX Series with SPC3 line card: Port flaps causes rtlogd memory leak leading to Denial of Service

Priority LOW 31CWE-401Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-401.

Summary

A Missing Release of Memory after Effective Lifetime vulnerability in the rtlogd process of Juniper Networks Junos OS on MX Series with SPC3 allows an unauthenticated, adjacent attacker to trigger internal events cause ( which can be done by repeated port flaps) to cause a slow memory leak, ultimately leading to a Denial of Service (DoS). Memory can only be recovered by manually restarting rtlogd process.  The memory usage can be monitored using the below command.     user@host> show system processes extensive | match rtlog  This issue affects Junos OS on MX Series with SPC3 line card:  * from 21.2R3 before 21.2R3-S8,  * from 21.4R2 before 21.4R3-S6,  * from 22.1 before 22.1R3-S5,  * from 22.2 before 22.2R3-S3,  * from 22.3 before 22.3R3-S2,  * from 22.4 before 22.4R3-S1,  * from 23.2 before 23.2R2,  * from 23.4 before 23.4R2.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00327 25th percentileScored 2026-11-07
Fix Fixed Junos OS (Juniper Networks): 21.2R3-S8, 21.4R3-S6, 22.1R3-S5 +5

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
JuniperJunos OS21.2R3 to before 21.2R3-S8; 21.4R2 to before 21.4R3-S6; 22.1 to before 22.1R3-S5; 22.2 to before 22.2R3-S3; 22.3 to before 22.3R3-S2; 22.4 to before 22.4R3-S1; 23.2 to before 23.2R2; 23.4 to before 23.4R221.2R3-S8, 21.4R3-S6, 22.1R3-S5, 22.2R3-S3, 22.3R3-S2, 22.4R3-S1, 23.2R2, 23.4R2Patch availableCNA
  • Junos OS VendorJuniper Affected 21.2R3 to before 21.2R3-S8; 21.4R2 to before 21.4R3-S6; 22.1 to before 22.1R3-S5; 22.2 to before 22.2R3-S3; 22.3 to before 22.3R3-S2; 22.4 to before 22.4R3-S1; 23.2 to before 23.2R2; 23.4 to before 23.4R2 Fixed in 21.2R3-S8, 21.4R3-S6, 22.1R3-S5, 22.2R3-S3, 22.3R3-S2, 22.4R3-S1, 23.2R2, 23.4R2 Patch available CNA

CPE configurations NVD · 67

CPEVersionsRoleVendor
cpe:2.3:o:juniper:junos:21.2:r3:*:*:*:*:*:*21.2 r3VulnerableJuniper
cpe:2.3:o:juniper:junos:21.2:r3-s1:*:*:*:*:*:*21.2 r3-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:21.2:r3-s2:*:*:*:*:*:*21.2 r3-s2VulnerableJuniper
cpe:2.3:o:juniper:junos:21.2:r3-s3:*:*:*:*:*:*21.2 r3-s3VulnerableJuniper
cpe:2.3:o:juniper:junos:21.2:r3-s4:*:*:*:*:*:*21.2 r3-s4VulnerableJuniper
cpe:2.3:o:juniper:junos:21.2:r3-s5:*:*:*:*:*:*21.2 r3-s5VulnerableJuniper
cpe:2.3:o:juniper:junos:21.2:r3-s6:*:*:*:*:*:*21.2 r3-s6VulnerableJuniper
cpe:2.3:o:juniper:junos:21.2:r3-s7:*:*:*:*:*:*21.2 r3-s7VulnerableJuniper
cpe:2.3:o:juniper:junos:21.4:r2:*:*:*:*:*:*21.4 r2VulnerableJuniper
cpe:2.3:o:juniper:junos:21.4:r2-s1:*:*:*:*:*:*21.4 r2-s1VulnerableJuniper
  • cpe:2.3:o:juniper:junos:21.2:r3:*:*:*:*:*:* Versions 21.2 r3 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:21.2:r3-s1:*:*:*:*:*:* Versions 21.2 r3-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:21.2:r3-s2:*:*:*:*:*:* Versions 21.2 r3-s2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:21.2:r3-s3:*:*:*:*:*:* Versions 21.2 r3-s3 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:21.2:r3-s4:*:*:*:*:*:* Versions 21.2 r3-s4 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:21.2:r3-s5:*:*:*:*:*:* Versions 21.2 r3-s5 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:21.2:r3-s6:*:*:*:*:*:* Versions 21.2 r3-s6 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:21.2:r3-s7:*:*:*:*:*:* Versions 21.2 r3-s7 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:21.4:r2:*:*:*:*:*:* Versions 21.4 r2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:21.4:r2-s1:*:*:*:*:*:* Versions 21.4 r2-s1 Vulnerable ·Juniper
Show 57 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:juniper:junos:21.4:r2-s2:*:*:*:*:*:*21.4 r2-s2VulnerableJuniper
cpe:2.3:o:juniper:junos:21.4:r3:*:*:*:*:*:*21.4 r3VulnerableJuniper
cpe:2.3:o:juniper:junos:21.4:r3-s1:*:*:*:*:*:*21.4 r3-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:21.4:r3-s2:*:*:*:*:*:*21.4 r3-s2VulnerableJuniper
cpe:2.3:o:juniper:junos:21.4:r3-s3:*:*:*:*:*:*21.4 r3-s3VulnerableJuniper
cpe:2.3:o:juniper:junos:21.4:r3-s4:*:*:*:*:*:*21.4 r3-s4VulnerableJuniper
cpe:2.3:o:juniper:junos:21.4:r3-s5:*:*:*:*:*:*21.4 r3-s5VulnerableJuniper
cpe:2.3:o:juniper:junos:22.1:-:*:*:*:*:*:*22.1VulnerableJuniper
cpe:2.3:o:juniper:junos:22.1:r1:*:*:*:*:*:*22.1 r1VulnerableJuniper
cpe:2.3:o:juniper:junos:22.1:r1-s1:*:*:*:*:*:*22.1 r1-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:22.1:r1-s2:*:*:*:*:*:*22.1 r1-s2VulnerableJuniper
cpe:2.3:o:juniper:junos:22.1:r2:*:*:*:*:*:*22.1 r2VulnerableJuniper
cpe:2.3:o:juniper:junos:22.1:r2-s1:*:*:*:*:*:*22.1 r2-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:22.1:r2-s2:*:*:*:*:*:*22.1 r2-s2VulnerableJuniper
cpe:2.3:o:juniper:junos:22.1:r3:*:*:*:*:*:*22.1 r3VulnerableJuniper
cpe:2.3:o:juniper:junos:22.1:r3-s1:*:*:*:*:*:*22.1 r3-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:22.1:r3-s2:*:*:*:*:*:*22.1 r3-s2VulnerableJuniper
cpe:2.3:o:juniper:junos:22.1:r3-s3:*:*:*:*:*:*22.1 r3-s3VulnerableJuniper
cpe:2.3:o:juniper:junos:22.1:r3-s4:*:*:*:*:*:*22.1 r3-s4VulnerableJuniper
cpe:2.3:o:juniper:junos:22.2:-:*:*:*:*:*:*22.2VulnerableJuniper
cpe:2.3:o:juniper:junos:22.2:r1:*:*:*:*:*:*22.2 r1VulnerableJuniper
cpe:2.3:o:juniper:junos:22.2:r1-s1:*:*:*:*:*:*22.2 r1-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:22.2:r1-s2:*:*:*:*:*:*22.2 r1-s2VulnerableJuniper
cpe:2.3:o:juniper:junos:22.2:r2:*:*:*:*:*:*22.2 r2VulnerableJuniper
cpe:2.3:o:juniper:junos:22.2:r2-s1:*:*:*:*:*:*22.2 r2-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:22.2:r2-s2:*:*:*:*:*:*22.2 r2-s2VulnerableJuniper
cpe:2.3:o:juniper:junos:22.2:r3:*:*:*:*:*:*22.2 r3VulnerableJuniper
cpe:2.3:o:juniper:junos:22.2:r3-s1:*:*:*:*:*:*22.2 r3-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:22.2:r3-s2:*:*:*:*:*:*22.2 r3-s2VulnerableJuniper
cpe:2.3:o:juniper:junos:22.3:-:*:*:*:*:*:*22.3VulnerableJuniper
cpe:2.3:o:juniper:junos:22.3:r1:*:*:*:*:*:*22.3 r1VulnerableJuniper
cpe:2.3:o:juniper:junos:22.3:r1-s1:*:*:*:*:*:*22.3 r1-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:22.3:r1-s2:*:*:*:*:*:*22.3 r1-s2VulnerableJuniper
cpe:2.3:o:juniper:junos:22.3:r2:*:*:*:*:*:*22.3 r2VulnerableJuniper
cpe:2.3:o:juniper:junos:22.3:r2-s1:*:*:*:*:*:*22.3 r2-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:22.3:r2-s2:*:*:*:*:*:*22.3 r2-s2VulnerableJuniper
cpe:2.3:o:juniper:junos:22.3:r3:*:*:*:*:*:*22.3 r3VulnerableJuniper
cpe:2.3:o:juniper:junos:22.3:r3-s1:*:*:*:*:*:*22.3 r3-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:22.4:-:*:*:*:*:*:*22.4VulnerableJuniper
cpe:2.3:o:juniper:junos:22.4:r1:*:*:*:*:*:*22.4 r1VulnerableJuniper
cpe:2.3:o:juniper:junos:22.4:r1-s1:*:*:*:*:*:*22.4 r1-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:22.4:r1-s2:*:*:*:*:*:*22.4 r1-s2VulnerableJuniper
cpe:2.3:o:juniper:junos:22.4:r2:*:*:*:*:*:*22.4 r2VulnerableJuniper
cpe:2.3:o:juniper:junos:22.4:r2-s1:*:*:*:*:*:*22.4 r2-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:22.4:r2-s2:*:*:*:*:*:*22.4 r2-s2VulnerableJuniper
cpe:2.3:o:juniper:junos:22.4:r3:*:*:*:*:*:*22.4 r3VulnerableJuniper
cpe:2.3:o:juniper:junos:23.2:-:*:*:*:*:*:*23.2VulnerableJuniper
cpe:2.3:o:juniper:junos:23.2:r1:*:*:*:*:*:*23.2 r1VulnerableJuniper
cpe:2.3:o:juniper:junos:23.2:r1-s1:*:*:*:*:*:*23.2 r1-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:23.2:r1-s2:*:*:*:*:*:*23.2 r1-s2VulnerableJuniper
cpe:2.3:o:juniper:junos:23.4:-:*:*:*:*:*:*23.4VulnerableJuniper
cpe:2.3:o:juniper:junos:23.4:r1:*:*:*:*:*:*23.4 r1VulnerableJuniper
cpe:2.3:o:juniper:junos:23.4:r1-s1:*:*:*:*:*:*23.4 r1-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:23.4:r1-s2:*:*:*:*:*:*23.4 r1-s2VulnerableJuniper
cpe:2.3:h:juniper:mx240:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:mx480:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:mx960:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
  • cpe:2.3:o:juniper:junos:21.4:r2-s2:*:*:*:*:*:* Versions 21.4 r2-s2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:21.4:r3:*:*:*:*:*:* Versions 21.4 r3 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:21.4:r3-s1:*:*:*:*:*:* Versions 21.4 r3-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:21.4:r3-s2:*:*:*:*:*:* Versions 21.4 r3-s2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:21.4:r3-s3:*:*:*:*:*:* Versions 21.4 r3-s3 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:21.4:r3-s4:*:*:*:*:*:* Versions 21.4 r3-s4 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:21.4:r3-s5:*:*:*:*:*:* Versions 21.4 r3-s5 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.1:-:*:*:*:*:*:* Versions 22.1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.1:r1:*:*:*:*:*:* Versions 22.1 r1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.1:r1-s1:*:*:*:*:*:* Versions 22.1 r1-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.1:r1-s2:*:*:*:*:*:* Versions 22.1 r1-s2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.1:r2:*:*:*:*:*:* Versions 22.1 r2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.1:r2-s1:*:*:*:*:*:* Versions 22.1 r2-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.1:r2-s2:*:*:*:*:*:* Versions 22.1 r2-s2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.1:r3:*:*:*:*:*:* Versions 22.1 r3 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.1:r3-s1:*:*:*:*:*:* Versions 22.1 r3-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.1:r3-s2:*:*:*:*:*:* Versions 22.1 r3-s2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.1:r3-s3:*:*:*:*:*:* Versions 22.1 r3-s3 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.1:r3-s4:*:*:*:*:*:* Versions 22.1 r3-s4 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.2:-:*:*:*:*:*:* Versions 22.2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.2:r1:*:*:*:*:*:* Versions 22.2 r1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.2:r1-s1:*:*:*:*:*:* Versions 22.2 r1-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.2:r1-s2:*:*:*:*:*:* Versions 22.2 r1-s2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.2:r2:*:*:*:*:*:* Versions 22.2 r2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.2:r2-s1:*:*:*:*:*:* Versions 22.2 r2-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.2:r2-s2:*:*:*:*:*:* Versions 22.2 r2-s2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.2:r3:*:*:*:*:*:* Versions 22.2 r3 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.2:r3-s1:*:*:*:*:*:* Versions 22.2 r3-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.2:r3-s2:*:*:*:*:*:* Versions 22.2 r3-s2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.3:-:*:*:*:*:*:* Versions 22.3 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.3:r1:*:*:*:*:*:* Versions 22.3 r1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.3:r1-s1:*:*:*:*:*:* Versions 22.3 r1-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.3:r1-s2:*:*:*:*:*:* Versions 22.3 r1-s2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.3:r2:*:*:*:*:*:* Versions 22.3 r2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.3:r2-s1:*:*:*:*:*:* Versions 22.3 r2-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.3:r2-s2:*:*:*:*:*:* Versions 22.3 r2-s2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.3:r3:*:*:*:*:*:* Versions 22.3 r3 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.3:r3-s1:*:*:*:*:*:* Versions 22.3 r3-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.4:-:*:*:*:*:*:* Versions 22.4 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.4:r1:*:*:*:*:*:* Versions 22.4 r1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.4:r1-s1:*:*:*:*:*:* Versions 22.4 r1-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.4:r1-s2:*:*:*:*:*:* Versions 22.4 r1-s2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.4:r2:*:*:*:*:*:* Versions 22.4 r2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.4:r2-s1:*:*:*:*:*:* Versions 22.4 r2-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.4:r2-s2:*:*:*:*:*:* Versions 22.4 r2-s2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:22.4:r3:*:*:*:*:*:* Versions 22.4 r3 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:23.2:-:*:*:*:*:*:* Versions 23.2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:23.2:r1:*:*:*:*:*:* Versions 23.2 r1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:23.2:r1-s1:*:*:*:*:*:* Versions 23.2 r1-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:23.2:r1-s2:*:*:*:*:*:* Versions 23.2 r1-s2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:23.4:-:*:*:*:*:*:* Versions 23.4 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:23.4:r1:*:*:*:*:*:* Versions 23.4 r1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:23.4:r1-s1:*:*:*:*:*:* Versions 23.4 r1-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:23.4:r1-s2:*:*:*:*:*:* Versions 23.4 r1-s2 Vulnerable ·Juniper
  • cpe:2.3:h:juniper:mx240:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:mx480:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:mx960:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper

Remediation

  • Fix · CNA Junos OS (Juniper Networks) Fixed in 21.2R3-S8, 21.4R3-S6, 22.1R3-S5, 22.2R3-S3, 22.3R3-S2, 22.4R3-S1, 23.2R2, 23.4R2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-39550
  2. 2026-10-03 Alias added: GHSA-938g-xvpf-6653

References

Advisory 1

  • TI-2023-18638 Junos OS: EX and SRX Series: A PHP vulnerability in J-Web allows an unauthenticated to… KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-01585 Out of Cycle Security Advisory: Junos OS: Security vulnerability in J-Web and web based (HTTP/HTTPS) services KEVCVSS 3.1CRITICAL 9.8
  • TI-2015-04610 Assertion failure in ISC BIND named via TKEY queries KEVCVSS 3.1HIGH 7.5
  • TI-2025-15550 Junos OS: An local attacker with shell access can execute arbitrary code KEVCVSS 4.0MEDIUM 6.7
  • TI-2023-18644 Junos OS: SRX Series: A vulnerability in J-Web allows an unauthenticated attacker to upload and download arbitrary files KEVCVSS 3.1MEDIUM 5.3
  • TI-2023-18640 Junos OS: EX Series: A vulnerability in J-Web allows an unauthenticated attacker to upload arbitrary files KEVCVSS 3.1MEDIUM 5.3
See all 792 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences