CVE-2026-57021

EPSS 0.34%
Veröffentlicht 09.07.2026 21:05:45
Zuletzt bearbeitet 13.07.2026 20:33:08
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Junos OS: SRX Series: If VPN compliance-check is configured an attacker can cause http-gk process crash

An Out-of-bounds Write vulnerability in the http-gatekeeper (http-gk) of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).

If an SRX Series device is configured for remote-access VPN with pre-logon compliance check, a network-based attacker sending specifically formatted requests can trigger an out of bounds write leading to an http-gk process crash. This crash leads to unavailability of all services depending on the [ system services web-management ] configuration (like J-Web, remote access VPN and firewall authentication) until the process automatically restarts.

This issue affects Junos OS on SRX Series:


  *  23.2 versions before 23.2R2-S7,
  *  23.4 versions before 23.4R2-S8,
  *  24.2 versions before 24.2R2-S4,
  *  24.4 versions before 24.4R2-S4,
  *  25.2 versions before 25.2R2,
  *  25.4 versions before 25.4R1-S1, 25.4R2.

Betroffene Produkte Warnungen 0 Metriken 3 CWE 1 Referenzen 4

NVD 45 VulnDex Vulnerability Enrichment 1

Daten sind bereitgestellt durch National Vulnerability Database (NVD)

Juniper ≫ Junos Version 23.2 Update -

   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 Version 23.2 Update r1

Juniper ≫ Junos Version 23.2 Update r1-s1

Juniper ≫ Junos Version 23.2 Update r1-s2

Juniper ≫ Junos Version 23.2 Update r2

Juniper ≫ Junos Version 23.2 Update r2-s1

Juniper ≫ Junos Version 23.2 Update r2-s2

Juniper ≫ Junos Version 23.2 Update r2-s3

Juniper ≫ Junos Version 23.2 Update r2-s4

Juniper ≫ Junos Version 23.2 Update r2-s5

Juniper ≫ Junos Version 23.2 Update r2-s6

Juniper ≫ Junos Version 23.4 Update -

Juniper ≫ Junos Version 23.4 Update r1

Juniper ≫ Junos Version 23.4 Update r1-s1

Juniper ≫ Junos Version 23.4 Update r1-s2

Juniper ≫ Junos Version 23.4 Update r2

Juniper ≫ Junos Version 23.4 Update r2-s1

Juniper ≫ Junos Version 23.4 Update r2-s2

Juniper ≫ Junos Version 23.4 Update r2-s3

Juniper ≫ Junos Version 23.4 Update r2-s4

Juniper ≫ Junos Version 23.4 Update r2-s5

Juniper ≫ Junos Version 23.4 Update r2-s6

Juniper ≫ Junos Version 23.4 Update r2-s7

Juniper ≫ Junos Version 24.2 Update -

Juniper ≫ Junos Version 24.2 Update r1

Juniper ≫ Junos Version 24.2 Update r1-s1

Juniper ≫ Junos Version 24.2 Update r1-s2

Juniper ≫ Junos Version 24.2 Update r2

Juniper ≫ Junos Version 24.2 Update r2-s1

Juniper ≫ Junos Version 24.2 Update r2-s2

Juniper ≫ Junos Version 24.2 Update r2-s3

Juniper ≫ Junos Version 24.4 Update -

Juniper ≫ Junos Version 24.4 Update r1

Juniper ≫ Junos Version 24.4 Update r1-s2

Juniper ≫ Junos Version 24.4 Update r1-s3

Juniper ≫ Junos Version 24.4 Update r2

Juniper ≫ Junos Version 24.4 Update r2-s1

Juniper ≫ Junos Version 24.4 Update r2-s2

Juniper ≫ Junos Version 24.4 Update r2-s3

Juniper ≫ Junos Version 25.2 Update -

Juniper ≫ Junos Version 25.2 Update r1

Juniper ≫ Junos Version 25.2 Update r1-s1

Juniper ≫ Junos Version 25.2 Update r1-s2

Juniper ≫ Junos Version 25.4 Update -

Juniper ≫ Junos Version 25.4 Update r1

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	0.34%	0.26

CVSS Metriken
Quelle	Base Score	Exploit Score	Impact Score	Vector String
Juniper	6.9	0	0	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/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	5.3	3.9	1.4	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

https://supportportal.juniper.net/JSA110081

Vendor Advisory

https://nvd.nist.gov/vuln/detail/CVE-2026-57021

CVE Source (NVD)

https://cveawg.mitre.org/api/cve/CVE-2026-57021

CVE Source (JSON)

https://euvd.enisa.europa.eu/vulnerability/CVE-2026-57021

EUVD

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CVE-2026-57021