Medium severity · published Oct 14, 2026
CVE-2026-102087
Junos OS and Junos OS Evolved: If in a traffic engineering scenario a specific valid BGP-LS attribute is received rpd crashes
6.5
CVSS
0.3%
EPSS
No
On KEV
Description
An Incomplete List of Disallowed Inputs vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a Denial-of-Service (DoS).
When in a BGP traffic engineering scenario a specific, valid, optional, non-transitive BGP update is received over an established BGP session, RPD crashes and automatically restarts, which leads to traffic impact until routing has reconverged.
This issue affects:
Junos OS:
* All versions before 23.2R2-S6;
* 23.4 versions before 23.4R2-S7;
* 24.2 versions before 24.2R2-S4;
* 24.4 versions before 24.4R2-S4;
* 25.2 versions before 25.2R1-S2, 25.2R2;
Junos OS Evolved:
* All versions before 23.2R2-S6-EVO;
* 23.4 versions before 23.4R2-S8.11-EVO;
* 24.2 versions before 24.2R2-S4-EVO;
* 24.4 versions before 24.4R2-S5-EVO;
* 25.2 versions before 25.2R1-S2-EVO, 25.2R2-EVO;
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 16% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
JO
Junos OS · Juniper
before 23.2R2-S6; 23.4 before 23.4R2-S7; 24.2 before 24.2R2-S4; 24.4 before 24.4R2-S4; 25.2 before 25.2R1-S2, 25.2R2 · source: vendor
JO
Junos OS Evolved · Juniper Networks
before 23.2R2-S6-EVO; 23.4 before 23.4R2-S8.11-EVO; 24.2 before 24.2R2-S4-EVO; 24.4 before 24.4R2-S5-EVO; 25.2 before 25.2R1-S2-EVO, 25.2R2-EVO · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-102087
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-102087
vendor-advisory
https://supportportal.juniper.net/JSA112168
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