by Kastro
Paper/Archive/CVE-2026-101950

CVE-2026-101950

Juniper Networks Junos OS — Junos OS: SRX Series: Malformed IPv4 packets cause packet-forwarding process crash when Secure Vector Routing is enabled

EPSS 0.5%CVSS 9.8
critical.is priorityof 100
38
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 40.5.405 × 208.1No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

A Heap-based Buffer Overflow vulnerability in the SVR component of Juniper Networks Junos OS on SRX Series allows an unauthenticated network attacker to cause a denial of service and potentially compromise confidentiality and integrity via malformed IPv4 packets reaching an interface configured for Secure Vector Routing.

Affected

ProductAffectedFixed inSource
Junos OS< 23.2R2-S7.723.2R2-S7.7CNA
Junos OS23.4 – < 23.4R2-S8.1323.4R2-S8.13CNA
Junos OS24.2 – < 24.2R2-S5.524.2R2-S5.5CNA
Junos OS24.4 – < 24.4R2-S524.4R2-S5CNA
Junos OS25.2 – < 25.2R2-S225.2R2-S2CNA
Junos OS25.4 – < 25.4R1-S325.4R1-S3CNA
Junos OS26.2 – < 26.2R1-S226.2R1-S2CNA

Scores by source

juniper (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
juniper (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:L
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

advisorysupportportal.juniper.net/JSA112186