Vulnerability · Published Oct 14, 2026 · Assigned by juniper
CVE-2026-102057Junos OS: An attacker causes DHCP service disruption during DHCP client operation
High 7.5
In plain English
A high-severity stack buffer overflow in Junos OS from Juniper Networks. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.4%top 68.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A Stack-based Buffer Overflow vulnerability in the jdhcpd process of Juniper Networks Junos OS allows an unauthenticated adjacent attacker to cause a denial of service via a DHCP client response. The issue affects DHCP client operation and can interrupt related DHCP, relay, and zero-touch-provisioning services.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Juniper Networks | Junos OS | 0 – before 23.2R2-S7.723.4 – before 23.4R2-S8.1324.2 – before 24.2R2-S5.524.4 – before 24.4R2-S525.2 – before 25.2R2-S225.4 – before 25.4R1-S326.2 – before 26.2R1-S2 |
Weakness: CWE-121 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://supportportal.juniper.net/JSA112188 vendor-advisory