CVE-2026-57026

EPSS 0.33%
Veröffentlicht 09.07.2026 21:07:44
Zuletzt bearbeitet 14.07.2026 15:03:23
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Junos OS: MX Series with SPC3, SRX Series: Processing of a specifically malformed SIP invite causes a flowd crash

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.

Betroffene Produkte Warnungen 0 Metriken 3 CWE 1 Referenzen 4

NVD 48 VulnDex Vulnerability Enrichment 1

Daten sind bereitgestellt durch National Vulnerability Database (NVD)

Juniper ≫ Junos Version < 23.2

   Juniper ≫ Mx-spc3 Version-
   Juniper ≫ Mx240 Version-
   Juniper ≫ Mx480 Version-
   Juniper ≫ Mx960 Version-
   Juniper ≫ Srx1500 Version-
   Juniper ≫ Srx1600 Version-
   Juniper ≫ Srx2300 Version-
   Juniper ≫ Srx300 Version-
   Juniper ≫ Srx320 Version-
   Juniper ≫ Srx340 Version-
   Juniper ≫ Srx345 Version-
   Juniper ≫ Srx380 Version-
   Juniper ≫ Srx400 Version-
   Juniper ≫ Srx4100 Version-
   Juniper ≫ Srx4120 Version-
   Juniper ≫ Srx4200 Version-
   Juniper ≫ Srx4300 Version-
   Juniper ≫ Srx440 Version-
   Juniper ≫ Srx4600 Version-
   Juniper ≫ Srx4700 Version-
   Juniper ≫ Srx5400 Version-
   Juniper ≫ Srx5600 Version-
   Juniper ≫ Srx5800 Version-

Juniper ≫ Junos Version23.2 Update-

Juniper ≫ Junos Version23.2 Updater1

Juniper ≫ Junos Version23.2 Updater1-s1

Juniper ≫ Junos Version23.2 Updater1-s2

Juniper ≫ Junos Version23.2 Updater2

Juniper ≫ Junos Version23.2 Updater2-s1

Juniper ≫ Junos Version23.2 Updater2-s2

Juniper ≫ Junos Version23.2 Updater2-s3

Juniper ≫ Junos Version23.2 Updater2-s4

Juniper ≫ Junos Version23.2 Updater2-s5

Juniper ≫ Junos Version23.2 Updater2-s6

Juniper ≫ Junos Version23.4 Update-

Juniper ≫ Junos Version23.4 Updater1

Juniper ≫ Junos Version23.4 Updater1-s1

Juniper ≫ Junos Version23.4 Updater1-s2

Juniper ≫ Junos Version23.4 Updater2

Juniper ≫ Junos Version23.4 Updater2-s1

Juniper ≫ Junos Version23.4 Updater2-s2

Juniper ≫ Junos Version23.4 Updater2-s3

Juniper ≫ Junos Version23.4 Updater2-s4

Juniper ≫ Junos Version23.4 Updater2-s5

Juniper ≫ Junos Version23.4 Updater2-s6

Juniper ≫ Junos Version23.4 Updater2-s7

Juniper ≫ Junos Version24.2 Update-

Juniper ≫ Junos Version24.2 Updater1

Juniper ≫ Junos Version24.2 Updater1-s1

Juniper ≫ Junos Version24.2 Updater1-s2

Juniper ≫ Junos Version24.2 Updater2

Juniper ≫ Junos Version24.2 Updater2-s1

Juniper ≫ Junos Version24.2 Updater2-s2

Juniper ≫ Junos Version24.2 Updater2-s3

Juniper ≫ Junos Version24.2 Updater2-s4

Juniper ≫ Junos Version24.4 Update-

Juniper ≫ Junos Version24.4 Updater1

Juniper ≫ Junos Version24.4 Updater1-s2

Juniper ≫ Junos Version24.4 Updater1-s3

Juniper ≫ Junos Version24.4 Updater2

Juniper ≫ Junos Version24.4 Updater2-s1

Juniper ≫ Junos Version24.4 Updater2-s2

Juniper ≫ Junos Version24.4 Updater2-s3

Juniper ≫ Junos Version25.2 Update-

Juniper ≫ Junos Version25.2 Updater1

Juniper ≫ Junos Version25.2 Updater1-s1

Juniper ≫ Junos Version25.2 Updater1-s2

Juniper ≫ Junos Version25.4 Update-

Juniper ≫ Junos Version25.4 Updater1

Juniper ≫ Junos Version25.4 Updater1-s1

VulnDex Vulnerability Enrichment

Diese Information steht angemeldeten Benutzern zur Verfügung.

Zu dieser CVE wurde keine Warnung gefunden.

EPSS Metriken
Typ	Quelle	Score	Percentile
EPSS	FIRST.org	0.33%	0.255

CVSS Metriken
Quelle	Base Score	Exploit Score	Impact Score	Vector String
Juniper	8.7	0	0	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/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:X/RE:M/U:X
Juniper	7.5	3.9	3.6	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-1286 Improper Validation of Syntactic Correctness of Input

The product receives input that is expected to be well-formed - i.e., to comply with a certain syntax - but it does not validate or incorrectly validates that the input complies with the syntax.

https://supportportal.juniper.net/JSA110086

Vendor Advisory

https://nvd.nist.gov/vuln/detail/CVE-2026-57026

CVE Source (NVD)

https://cveawg.mitre.org/api/cve/CVE-2026-57026

CVE Source (JSON)

https://euvd.enisa.europa.eu/vulnerability/CVE-2026-57026

EUVD

Team-orientierte Vulnerability Management Plattform

Features der Plattform

CVE-2026-57026