Vulnerability details
CVE-2026-101938
Juniper Networks Junos OSJuniper Networks Junos OS Evolved
Junos OS and Junos OS Evolved: SRX Series: An attacker causes a forwarding-plane outage when SVR vector routing is used
CVSS 4.0
7.1High
Official description
An Integer Underflow (Wrap or Wraparound) vulnerability in the srxpfe of Juniper Networks Junos OS and Junos OS Evolved on the SRX Series allows an adjacent unauthenticated attacker to cause a forwarding-plane denial of service via an ICMP message associated with an SVR carrier session.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.1High | 4.0 | CVEProject cvelistV5 (CNA) (juniper) | CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/V:C/RE:M |
| 6.5Medium | 3.1 | CVEProject cvelistV5 (CNA) (juniper) | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Juniper Networks | Junos OS | v < 23.2R2-S7.7 | CVEProject cvelistV5 (CNA) |
| Juniper Networks | Junos OS | 23.4 ≤ v < 23.4R2-S8.13 | CVEProject cvelistV5 (CNA) |
| Juniper Networks | Junos OS | 24.2 ≤ v < 24.2R2-S5.5 | CVEProject cvelistV5 (CNA) |
| Juniper Networks | Junos OS | 24.4 ≤ v < 24.4R2-S5 | CVEProject cvelistV5 (CNA) |
| Juniper Networks | Junos OS | 25.2 ≤ v < 25.2R2-S2 | CVEProject cvelistV5 (CNA) |
| Juniper Networks | Junos OS | 25.4 ≤ v < 25.4R1-S3 | CVEProject cvelistV5 (CNA) |
| Juniper Networks | Junos OS | 26.2 ≤ v < 26.2R1-S2 | CVEProject cvelistV5 (CNA) |
| Juniper Networks | Junos OS Evolved | v < 23.2R2-S7.7-EVO | CVEProject cvelistV5 (CNA) |
| Juniper Networks | Junos OS Evolved | 23.4X100 | CVEProject cvelistV5 (CNA) |
| Juniper Networks | Junos OS Evolved | 23.4 ≤ v < 23.4R2-S8.11-EVO | CVEProject cvelistV5 (CNA) |
| Juniper Networks | Junos OS Evolved | 24.2 ≤ v < 24.2R2-S5.6-EVO | CVEProject cvelistV5 (CNA) |
| Juniper Networks | Junos OS Evolved | 24.4 ≤ v < 24.4R2-S5-EVO | CVEProject cvelistV5 (CNA) |
| Juniper Networks | Junos OS Evolved | 25.2 ≤ v < 25.2R2-S2-EVO | CVEProject cvelistV5 (CNA) |
| Juniper Networks | Junos OS Evolved | 25.2X100 ≤ v < 25.2X100-D35-EVO | CVEProject cvelistV5 (CNA) |
| Juniper Networks | Junos OS Evolved | 25.4 ≤ v < 25.4R1-S3-EVO | CVEProject cvelistV5 (CNA) |
| Juniper Networks | Junos OS Evolved | 25.4X300 ≤ v < 25.4X300-D40-EVO | CVEProject cvelistV5 (CNA) |
| Juniper Networks | Junos OS Evolved | 26.2 ≤ v < 26.2R1-S2-EVO | CVEProject cvelistV5 (CNA) |
References and advisories
1- https://supportportal.juniper.net/JSA112186 vendor-advisory
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Details
- Published
- 2026-10-14
- Last updated
- 2026-10-14
- State
- Published
- Assigner (CNA)
- juniper
Exploit prediction (EPSS)
0.24%
Probability of exploitation in 30 days
15.7%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-191Integer Underflow (Wrap or Wraparound)