CVE-2026-102174 Memory corruption in Junos OS
Authenticated VPN clients can trigger a stack buffer overflow in iked to execute root code or cause DoS when JIMS identity publishing is enabled.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-102174?
CVE-2026-102174 is a high-severity memory corruption vulnerability in Juniper Networks Junos OS, published on 14 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A Stack-based Buffer Overflow vulnerability in the iked IKE key-management daemon of Juniper Networks Junos OS on the SRX Series allows an authenticated remote-access VPN client to execute code with root privileges or cause denial of service via the remote-access VPN authentication and JIMS identity-publishing path.
Weakness: CWE-121
Which versions are affected by CVE-2026-102174?
How do I fix CVE-2026-102174?
No fix has been published for CVE-2026-102174 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-102174 being exploited?
There is no known exploitation of CVE-2026-102174 in the wild and no public exploit code.
Sources
Also known as GHSA-fmx5-gpxg-52jp.