# CVE-2026-102174: Juniper Junos OS SRX stack-based buffer overflow in iked

Source: https://junglewise.ai/threats/cve-2026-102174-a-stack-based-buffer-overflow-vulnerability-in-the-iked-ike-key  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-14. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-102174 · Severity: high · CVSS 8.8 · Published 2026-10-14

A stack-based buffer overflow exists in the iked daemon, which manages IPsec VPN authentication on Juniper SRX series security appliances. An authenticated remote-access VPN client can exploit this vulnerability to execute arbitrary code with root privileges or crash the device, potentially compromising the entire network or causing a complete outage.

Technologies: [Juniper Networks Junos OS](https://junglewise.ai/threats/technologies/juniper-networks-junos-os). Vendors: [Juniper Networks](https://junglewise.ai/threats/vendors/juniper-networks).

## Quick answers

**Is CVE-2026-102174 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-102174 being exploited in the wild.

**How severe is CVE-2026-102174?** High severity, with a CVSS score of 8.8, published 14 October 2026.

**Which products and versions are affected?** Juniper Networks Junos OS SRX series.

**Is there a fix for CVE-2026-102174?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-102174 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-102174?** Check whether you run Juniper Networks Junos OS at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A stack-based buffer overflow in the iked IKE key-management daemon on SRX series firewalls can be triggered by an authenticated remote-access VPN client during the authentication and JIMS identity-publishing phases. The vulnerability allows an attacker with valid VPN credentials to execute arbitrary code with root privileges or trigger a denial of service. This requires authentication and network access to the VPN endpoint.

## Affected products

- Juniper Networks Junos OS SRX series

## Timeline

- 2026-10-14: disclosed

## References

- [https://supportportal.juniper.net/JSA112186](https://supportportal.juniper.net/JSA112186)

## Related threats

- [Juniper Networks Junos OS stack buffer overflow in BGP/EVPN](https://junglewise.ai/threats/cve-2026-101982-a-stack-based-buffer-overflow-vulnerability-in-the-routing)
- [Juniper Networks Junos OS stack buffer overflow in rpd](https://junglewise.ai/threats/cve-2026-101981-a-stack-based-buffer-overflow-vulnerability-in-the-routing)
- [Juniper Junos OS routing protocol daemon crash in ISO-VPN](https://junglewise.ai/threats/cve-2026-101952-an-improper-validation-of-consistency-within-input-vulnerability)
- [Juniper Networks Junos OS stack buffer overflow in BGP routing daemon](https://junglewise.ai/threats/cve-2026-102178-a-stack-based-buffer-overflow-vulnerability-in-the-bgp-routing)
- [Juniper Junos buffer overflow in SDK service process](https://junglewise.ai/threats/cve-2026-102176-a-buffer-copy-without-checking-size-of-input-classic-buffer)