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TI-2026-41051 Aliases CVE-2026-57026GHSA-q2w6-r35r-2hxj

Junos OS: MX Series with SPC3, SRX Series: Processing of a specifically malformed SIP invite causes a flowd crash

Priority MEDIUM 44CWE-1286Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

An Improper Validation of Syntactic Correctness of Input vulnerability in the SIP plugin of Juniper Networks Junos OS on MX Series with SPC3 and SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).If the SIP ALG is enabled on an affected device, the processing of a malformed SIP invite packet will cause a flow processing daemon (flowd) crash and restart. This leads to a complete service outage until the system has automatically recovered. This issue affects Junos OS on MX Series with SPC3 and SRX Series: * all versions before 23.2R2-S7, * 23.4 versions before 23.4R2-S8, * 24.2 versions before 24.2R2-S5, * 24.4 versions before 24.4R2-S4, * 25.2 versions before 25.2R2, * 25.4 versions before 25.4R1-S2.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0046 40th percentileScored 2026-11-08
Fix Fixed Junos OS (Juniper Networks): 23.2R2-S7, 23.4R2-S8, 24.2R2-S5 +3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
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 OSbefore 23.2R2-S7; 23.4 to before 23.4R2-S8; 24.2 to before 24.2R2-S5; 24.4 to before 24.4R2-S4; 25.2 to before 25.2R2; 25.4 to before 25.4R1-S223.2R2-S7, 23.4R2-S8, 24.2R2-S5, 24.4R2-S4, 25.2R2, 25.4R1-S2Patch availableCNA
  • Junos OS VendorJuniper Affected before 23.2R2-S7; 23.4 to before 23.4R2-S8; 24.2 to before 24.2R2-S5; 24.4 to before 24.4R2-S4; 25.2 to before 25.2R2; 25.4 to before 25.4R1-S2 Fixed in 23.2R2-S7, 23.4R2-S8, 24.2R2-S5, 24.4R2-S4, 25.2R2, 25.4R1-S2 Patch available CNA

CPE configurations NVD · 71

CPEVersionsRoleVendor
cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*before 23.2VulnerableJuniper
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:23.2:r2:*:*:*:*:*:*23.2 r2VulnerableJuniper
cpe:2.3:o:juniper:junos:23.2:r2-s1:*:*:*:*:*:*23.2 r2-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:23.2:r2-s2:*:*:*:*:*:*23.2 r2-s2VulnerableJuniper
cpe:2.3:o:juniper:junos:23.2:r2-s3:*:*:*:*:*:*23.2 r2-s3VulnerableJuniper
cpe:2.3:o:juniper:junos:23.2:r2-s4:*:*:*:*:*:*23.2 r2-s4VulnerableJuniper
  • cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:* Versions before 23.2 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:23.2:r2:*:*:*:*:*:* Versions 23.2 r2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:23.2:r2-s1:*:*:*:*:*:* Versions 23.2 r2-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:23.2:r2-s2:*:*:*:*:*:* Versions 23.2 r2-s2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:23.2:r2-s3:*:*:*:*:*:* Versions 23.2 r2-s3 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:23.2:r2-s4:*:*:*:*:*:* Versions 23.2 r2-s4 Vulnerable ·Juniper
Show 61 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:juniper:junos:23.2:r2-s5:*:*:*:*:*:*23.2 r2-s5VulnerableJuniper
cpe:2.3:o:juniper:junos:23.2:r2-s6:*:*:*:*:*:*23.2 r2-s6VulnerableJuniper
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:o:juniper:junos:23.4:r2:*:*:*:*:*:*23.4 r2VulnerableJuniper
cpe:2.3:o:juniper:junos:23.4:r2-s1:*:*:*:*:*:*23.4 r2-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:23.4:r2-s2:*:*:*:*:*:*23.4 r2-s2VulnerableJuniper
cpe:2.3:o:juniper:junos:23.4:r2-s3:*:*:*:*:*:*23.4 r2-s3VulnerableJuniper
cpe:2.3:o:juniper:junos:23.4:r2-s4:*:*:*:*:*:*23.4 r2-s4VulnerableJuniper
cpe:2.3:o:juniper:junos:23.4:r2-s5:*:*:*:*:*:*23.4 r2-s5VulnerableJuniper
cpe:2.3:o:juniper:junos:23.4:r2-s6:*:*:*:*:*:*23.4 r2-s6VulnerableJuniper
cpe:2.3:o:juniper:junos:23.4:r2-s7:*:*:*:*:*:*23.4 r2-s7VulnerableJuniper
cpe:2.3:o:juniper:junos:24.2:-:*:*:*:*:*:*24.2VulnerableJuniper
cpe:2.3:o:juniper:junos:24.2:r1:*:*:*:*:*:*24.2 r1VulnerableJuniper
cpe:2.3:o:juniper:junos:24.2:r1-s1:*:*:*:*:*:*24.2 r1-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:24.2:r1-s2:*:*:*:*:*:*24.2 r1-s2VulnerableJuniper
cpe:2.3:o:juniper:junos:24.2:r2:*:*:*:*:*:*24.2 r2VulnerableJuniper
cpe:2.3:o:juniper:junos:24.2:r2-s1:*:*:*:*:*:*24.2 r2-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:24.2:r2-s2:*:*:*:*:*:*24.2 r2-s2VulnerableJuniper
cpe:2.3:o:juniper:junos:24.2:r2-s3:*:*:*:*:*:*24.2 r2-s3VulnerableJuniper
cpe:2.3:o:juniper:junos:24.2:r2-s4:*:*:*:*:*:*24.2 r2-s4VulnerableJuniper
cpe:2.3:o:juniper:junos:24.4:-:*:*:*:*:*:*24.4VulnerableJuniper
cpe:2.3:o:juniper:junos:24.4:r1:*:*:*:*:*:*24.4 r1VulnerableJuniper
cpe:2.3:o:juniper:junos:24.4:r1-s2:*:*:*:*:*:*24.4 r1-s2VulnerableJuniper
cpe:2.3:o:juniper:junos:24.4:r1-s3:*:*:*:*:*:*24.4 r1-s3VulnerableJuniper
cpe:2.3:o:juniper:junos:24.4:r2:*:*:*:*:*:*24.4 r2VulnerableJuniper
cpe:2.3:o:juniper:junos:24.4:r2-s1:*:*:*:*:*:*24.4 r2-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:24.4:r2-s2:*:*:*:*:*:*24.4 r2-s2VulnerableJuniper
cpe:2.3:o:juniper:junos:24.4:r2-s3:*:*:*:*:*:*24.4 r2-s3VulnerableJuniper
cpe:2.3:o:juniper:junos:25.2:-:*:*:*:*:*:*25.2VulnerableJuniper
cpe:2.3:o:juniper:junos:25.2:r1:*:*:*:*:*:*25.2 r1VulnerableJuniper
cpe:2.3:o:juniper:junos:25.2:r1-s1:*:*:*:*:*:*25.2 r1-s1VulnerableJuniper
cpe:2.3:o:juniper:junos:25.2:r1-s2:*:*:*:*:*:*25.2 r1-s2VulnerableJuniper
cpe:2.3:o:juniper:junos:25.4:-:*:*:*:*:*:*25.4VulnerableJuniper
cpe:2.3:o:juniper:junos:25.4:r1:*:*:*:*:*:*25.4 r1VulnerableJuniper
cpe:2.3:o:juniper:junos:25.4:r1-s1:*:*:*:*:*:*25.4 r1-s1VulnerableJuniper
cpe:2.3:h:juniper:mx-spc3:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
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:h:juniper:srx1500:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:srx1600:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:srx2300:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:srx300:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:srx320:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:srx340:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:srx345:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:srx380:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:srx400:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:srx4100:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:srx4120:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:srx4200:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:srx4300:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:srx440:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:srx4600:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:srx4700:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:srx5400:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:srx5600:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
cpe:2.3:h:juniper:srx5800:-:*:*:*:*:*:*:*not specified by NVDRunning onJuniper
  • cpe:2.3:o:juniper:junos:23.2:r2-s5:*:*:*:*:*:* Versions 23.2 r2-s5 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:23.2:r2-s6:*:*:*:*:*:* Versions 23.2 r2-s6 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:o:juniper:junos:23.4:r2:*:*:*:*:*:* Versions 23.4 r2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:23.4:r2-s1:*:*:*:*:*:* Versions 23.4 r2-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:23.4:r2-s2:*:*:*:*:*:* Versions 23.4 r2-s2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:23.4:r2-s3:*:*:*:*:*:* Versions 23.4 r2-s3 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:23.4:r2-s4:*:*:*:*:*:* Versions 23.4 r2-s4 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:23.4:r2-s5:*:*:*:*:*:* Versions 23.4 r2-s5 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:23.4:r2-s6:*:*:*:*:*:* Versions 23.4 r2-s6 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:23.4:r2-s7:*:*:*:*:*:* Versions 23.4 r2-s7 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:24.2:-:*:*:*:*:*:* Versions 24.2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:24.2:r1:*:*:*:*:*:* Versions 24.2 r1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:24.2:r1-s1:*:*:*:*:*:* Versions 24.2 r1-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:24.2:r1-s2:*:*:*:*:*:* Versions 24.2 r1-s2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:24.2:r2:*:*:*:*:*:* Versions 24.2 r2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:24.2:r2-s1:*:*:*:*:*:* Versions 24.2 r2-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:24.2:r2-s2:*:*:*:*:*:* Versions 24.2 r2-s2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:24.2:r2-s3:*:*:*:*:*:* Versions 24.2 r2-s3 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:24.2:r2-s4:*:*:*:*:*:* Versions 24.2 r2-s4 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:24.4:-:*:*:*:*:*:* Versions 24.4 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:24.4:r1:*:*:*:*:*:* Versions 24.4 r1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:24.4:r1-s2:*:*:*:*:*:* Versions 24.4 r1-s2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:24.4:r1-s3:*:*:*:*:*:* Versions 24.4 r1-s3 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:24.4:r2:*:*:*:*:*:* Versions 24.4 r2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:24.4:r2-s1:*:*:*:*:*:* Versions 24.4 r2-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:24.4:r2-s2:*:*:*:*:*:* Versions 24.4 r2-s2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:24.4:r2-s3:*:*:*:*:*:* Versions 24.4 r2-s3 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:25.2:-:*:*:*:*:*:* Versions 25.2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:25.2:r1:*:*:*:*:*:* Versions 25.2 r1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:25.2:r1-s1:*:*:*:*:*:* Versions 25.2 r1-s1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:25.2:r1-s2:*:*:*:*:*:* Versions 25.2 r1-s2 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:25.4:-:*:*:*:*:*:* Versions 25.4 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:25.4:r1:*:*:*:*:*:* Versions 25.4 r1 Vulnerable ·Juniper
  • cpe:2.3:o:juniper:junos:25.4:r1-s1:*:*:*:*:*:* Versions 25.4 r1-s1 Vulnerable ·Juniper
  • cpe:2.3:h:juniper:mx-spc3:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·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
  • cpe:2.3:h:juniper:srx1500:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:srx1600:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:srx2300:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:srx300:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:srx320:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:srx340:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:srx345:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:srx380:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:srx400:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:srx4100:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:srx4120:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:srx4200:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:srx4300:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:srx440:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:srx4600:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:srx4700:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:srx5400:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:srx5600:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper
  • cpe:2.3:h:juniper:srx5800:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Juniper

Remediation

  • Fix · CNA Junos OS (Juniper Networks) Fixed in 23.2R2-S7, 23.4R2-S8, 24.2R2-S5, 24.4R2-S4, 25.2R2, 25.4R1-S2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-57026
  2. 2026-10-03 Alias added: GHSA-q2w6-r35r-2hxj

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