Vulnerability · Published Oct 14, 2026 · Assigned by juniper
CVE-2026-101999Junos OS and Junos OS Evolved: An attacker causes rpd to crash when LDP is enabled
Medium 6.5
In plain English
A medium-severity security flaw 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 0.3% (higher than 19% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.3%top 80.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A Reachable Assertion vulnerability in the rpd process of Juniper Networks Junos OS and Junos EVO allows an adjacent attacker to cause a denial of service via an established LDP session carrying an IPv6 Prefix FEC in a specific Label message.
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 |
| Juniper Networks | Junos OS Evolved | 0 – before 23.2R2-S7.7-EVO23.4 – before 23.4R2-S8.11-EVO24.2 – before 24.2R2-S5.6-EVO24.4 – before 24.4R2-S5-EVO25.2 – before 25.2R2-S2-EVO25.4 – before 25.4R1-S3-EVO26.2 – before 26.2R1-S2-EVO23.4X100 |
Weakness: CWE-617 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://supportportal.juniper.net/JSA112187 vendor-advisory