CVE-2026-101968
Junos OS and Junos OS Evolved: EX Series, MX Series, ACX Series: An attacker causes rpd heap memory disclosure when Rosen-MVPN data-MDT is enabled
Juniper Networks Junos OSNetwork & edge
CVSS
5.4MediumExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.24%Chance of exploitation activity in the next 30 days, higher than 14% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 23.2R2-S7.7Junos OSCVE List
- 23.4R2-S8.13Junos OSCVE List
- 24.2R2-S5.5Junos OSCVE List
- 24.4R2-S5Junos OSCVE List
- 25.2R2-S2Junos OSCVE List
- 25.4R1-S3Junos OSCVE List
Show all 16 fixed versions
- 26.2R1-S2Junos OSCVE List
- 23.2R2-S7.7-EVOJunos OS EvolvedCVE List
- 23.4R2-S8.11-EVOJunos OS EvolvedCVE List
- 24.2R2-S5.6-EVOJunos OS EvolvedCVE List
- 24.4R2-S5-EVOJunos OS EvolvedCVE List
- 25.2R2-S2-EVOJunos OS EvolvedCVE List
- 25.4R1-S3-EVOJunos OS EvolvedCVE List
- 26.2R1-S2-EVOJunos OS EvolvedCVE List
- 25.2X100-D35-EVOJunos OS EvolvedCVE List
- 25.4X300-D40-EVOJunos OS EvolvedCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
Description
An Integer Underflow (Wrap or Wraparound) vulnerability in the rpd process of Juniper Networks Junos OS on EX Series and MX Series, and Junos OS Evolved on ACX Series allows an unauthenticated adjacent attacker to cause heap memory disclosure and multicast join-state injection via a malformed Rosen-MVPN message.
This issue only affects platforms that support draft Rosen MVPN, such as the ACX Series, EX Series, and MX Series.
Text from CVE List
Affected versions 17
- Junos OSaffected: all versions before 23.2R2-S7.7CVE List
- Junos OSaffected: 23.4 before 23.4R2-S8.13CVE List
- Junos OSaffected: 24.2 before 24.2R2-S5.5CVE List
- Junos OSaffected: 24.4 before 24.4R2-S5CVE List
- Junos OSaffected: 25.2 before 25.2R2-S2CVE List
- Junos OSaffected: 25.4 before 25.4R1-S3CVE List
- Junos OSaffected: 26.2 before 26.2R1-S2CVE List
- Junos OS Evolvedaffected: all versions before 23.2R2-S7.7-EVOCVE List
- Junos OS Evolvedaffected: 23.4 before 23.4R2-S8.11-EVOCVE List
- Junos OS Evolvedaffected: 24.2 before 24.2R2-S5.6-EVOCVE List
- Junos OS Evolvedaffected: 24.4 before 24.4R2-S5-EVOCVE List
- Junos OS Evolvedaffected: 25.2 before 25.2R2-S2-EVOCVE List
- Junos OS Evolvedaffected: 25.4 before 25.4R1-S3-EVOCVE List
- Junos OS Evolvedaffected: 26.2 before 26.2R1-S2-EVOCVE List
- Junos OS Evolvedaffected: 23.4X100CVE List
- Junos OS Evolvedaffected: 25.2X100 before 25.2X100-D35-EVOCVE List
- Junos OS Evolvedaffected: 25.4X300 before 25.4X300-D40-EVOCVE List