An Improper Validation of Syntactic Correctness of Input vulnerability in the IPsec library used by kmd and iked of Juniper Networks Junos OS on SRX Series and MX Series allows an unauthenticated, network-based attacker to cause a complete Denial-of-Service (DoS). If an affected device receives a specifically malformed first ISAKMP packet from the initiator, the kmd/iked process will crash and restart, which momentarily prevents new security associations (SAs) for from being established. Repeated exploitation of this vulnerability causes a complete inability to establish new VPN connections. This issue affects Junos OS on SRX Series and MX Series: * all versions before 22.4R3-S9, * 23.2 version before 23.2R2-S6, * 23.4 version before 23.4R2-S7, * 24.2 versions before 24.2R2-S4, * 24.4 versions before 24.4R2-S3, * 25.2 versions before 25.2R1-S2, 25.2R2.
History

Fri, 17 Apr 2026 17:30:00 +0000

Type Values Removed Values Added
First Time appeared Juniper
Juniper junos
Juniper mx10004
Juniper mx10008
Juniper mx2008
Juniper mx2010
Juniper mx2020
Juniper mx204
Juniper mx240
Juniper mx301
Juniper mx304
Juniper mx480
Juniper mx960
Juniper srx1500
Juniper srx1600
Juniper srx2300
Juniper srx300
Juniper srx320
Juniper srx340
Juniper srx345
Juniper srx380
Juniper srx4100
Juniper srx4120
Juniper srx4200
Juniper srx4300
Juniper srx4600
Juniper srx4700
Juniper srx5400
Juniper srx5600
Juniper srx5800
CPEs cpe:2.3:h:juniper:mx10004:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:mx10008:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:mx2008:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:mx2010:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:mx2020:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:mx204:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:mx240:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:mx301:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:mx304:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:mx480:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:mx960:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx1500:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx1600:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx2300:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx300:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx320:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx340:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx345:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx380:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx4100:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx4120:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx4200:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx4300:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx4600:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx4700:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx5400:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx5600:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:srx5800:-:*:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.4:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.4:r1-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.4:r1-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.4:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.4:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.4:r2-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.4:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.4:r3-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.4:r3-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.4:r3-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.4:r3-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.4:r3-s5:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.4:r3-s6:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.4:r3-s7:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.4:r3-s8:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:22.4:r3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.2:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.2:r1-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.2:r1-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.2:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.2:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.2:r2-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.2:r2-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.2:r2-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.2:r2-s5:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.2:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.4:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.4:r1-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.4:r1-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.4:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.4:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.4:r2-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.4:r2-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.4:r2-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.4:r2-s5:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.4:r2-s6:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.4:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:24.2:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:24.2:r1-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:24.2:r1-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:24.2:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:24.2:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:24.2:r2-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:24.2:r2-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:24.2:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:24.4:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:24.4:r1-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:24.4:r1-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:24.4:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:24.4:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:24.4:r2-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:24.4:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:25.2:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:25.2:r1-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:25.2:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:25.2:r2:*:*:*:*:*:*
Vendors & Products Juniper
Juniper junos
Juniper mx10004
Juniper mx10008
Juniper mx2008
Juniper mx2010
Juniper mx2020
Juniper mx204
Juniper mx240
Juniper mx301
Juniper mx304
Juniper mx480
Juniper mx960
Juniper srx1500
Juniper srx1600
Juniper srx2300
Juniper srx300
Juniper srx320
Juniper srx340
Juniper srx345
Juniper srx380
Juniper srx4100
Juniper srx4120
Juniper srx4200
Juniper srx4300
Juniper srx4600
Juniper srx4700
Juniper srx5400
Juniper srx5600
Juniper srx5800

Fri, 10 Apr 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 10 Apr 2026 09:00:00 +0000

Type Values Removed Values Added
First Time appeared Juniper Networks
Juniper Networks junos Os
Vendors & Products Juniper Networks
Juniper Networks junos Os

Thu, 09 Apr 2026 22:00:00 +0000

Type Values Removed Values Added
Description An Improper Validation of Syntactic Correctness of Input vulnerability in the IPsec library used by kmd and iked of Juniper Networks Junos OS on SRX Series and MX Series allows an unauthenticated, network-based attacker to cause a complete Denial-of-Service (DoS). If an affected device receives a specifically malformed first ISAKMP packet from the initiator, the kmd/iked process will crash and restart, which momentarily prevents new security associations (SAs) for from being established. Repeated exploitation of this vulnerability causes a complete inability to establish new VPN connections. This issue affects Junos OS on SRX Series and MX Series: * all versions before 22.4R3-S9, * 23.2 version before 23.2R2-S6, * 23.4 version before 23.4R2-S7, * 24.2 versions before 24.2R2-S4, * 24.4 versions before 24.4R2-S3, * 25.2 versions before 25.2R1-S2, 25.2R2.
Title Junos OS: SRX Series, MX Series: When a specifically malformed first ISAKMP packet is received kmd/iked crashes
Weaknesses CWE-1286
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/RE:M'}


cve-icon MITRE

Status: PUBLISHED

Assigner: juniper

Published:

Updated: 2026-04-10T14:11:42.844Z

Reserved: 2026-03-23T19:46:13.669Z

Link: CVE-2026-33778

cve-icon Vulnrichment

Updated: 2026-04-10T14:10:59.833Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-09T22:16:26.500

Modified: 2026-04-17T17:23:59.233

Link: CVE-2026-33778

cve-icon Redhat

No data.