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CVE-2026-101952

HIGHCVSS 7.5/10EPSS 0.37%

Last modified

CVE-2026-101952 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An Improper Validation of Consistency within Input vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a configured BGP ISO-VPN peer to cause an rpd crash by sending a specific ISO-VPN update which is then processed by BMP route monitoring or NSR.. EPSS estimates a 0.37% chance of exploitation in the next 30 days.

Description

An Improper Validation of Consistency within Input vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a configured BGP ISO-VPN peer to cause an rpd crash by sending a specific ISO-VPN update which is then processed by BMP route monitoring or NSR.

Metrics

CVSS 3.1
7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS 4.0
8.7/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability
0.37%

29.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
Juniper NetworksJunos OS< 23.2R2-S7.7; >= 23.4, < 23.4R2-S8.13; >= 24.2, < 24.2R2-S5.5; >= 24.4, < 24.4R2-S5; >= 25.2, < 25.2R2-S2; >= 25.4, < 25.4R1-S3; >= 26.2, < 26.2R1-S2
Juniper NetworksJunos OS Evolved< 23.2R2-S7.7-EVO; >= 23.4, < 23.4R2-S8.11-EVO; >= 24.2, < 24.2R2-S5.6-EVO; >= 24.4, < 24.4R2-S5-EVO; >= 25.2, < 25.2R2-S2-EVO; >= 25.4, < 25.4R1-S3-EVO; >= 26.2, < 26.2R1-S2-EVO; 23.4X100; >= 25.2X100, < 25.2X100-D35-EVO; >= 25.4X300, < 25.4X300-D40-EVO

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is CVE-2026-101952?
An Improper Validation of Consistency within Input vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a configured BGP ISO-VPN peer to cause an rpd crash by sending a specific ISO-VPN update which is then processed by BMP route monitoring or NSR.
How severe is CVE-2026-101952?
CVE-2026-101952 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.37% probability of exploitation in the next 30 days.
How do I fix CVE-2026-101952?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST