Authentication bypass in Juniper Session Smart products
| Risk | Critical |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2025-21589 |
| CWE-ID | CWE-287 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
Session Smart Router Server applications / Other server solutions WAN Assurance Router Hardware solutions / Routers & switches, VoIP, GSM, etc Session Smart Conductor Hardware solutions / Routers & switches, VoIP, GSM, etc |
| Vendor | Juniper Networks, Inc. |
Security Bulletin
This security bulletin contains one critical risk vulnerability.
1) Improper authentication
EUVDB-ID: #VU103903
Risk: Critical
CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Red]
CVE-ID: CVE-2025-21589
CWE-ID:
CWE-287 - Improper Authentication
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to an unspecified error in the authentication process. A remote non-authenticated attacker can bypass authentication and gain administrative access to the device.
MitigationInstall updates from vendor's website.
Vulnerable software versionsSession Smart Router: before 5.6.17
WAN Assurance Router: before 5.6.17
Session Smart Conductor: before 5.6.17
CPE2.3- cpe:2.3:a:juniper_networks:session_smart_router:*:*:*:*:*:*:*:*
- cpe:2.3:h:juniper_networks:wan_assurance_router:*:*:*:*:*:*:*:*
- cpe:2.3:h:juniper_networks:session_smart_conductor:*:*:*:*:*:*:*:*
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
