Medium severity · published Oct 28, 2026
CVE-2026-103390
Session Smart Router and Session Smart Conductor: A malformed HTTP URI causes a service crash during HTTP application identification
New
5.3
CVSS
–
EPSS
No
On KEV
Description
An Out-of-Bounds Read vulnerability in the HttpParser component in Juniper Networks Session Smart Router and Session Smart Conductor allows an attacker to cause a denial of service via a specially crafted HTTP request.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SS
Session Smart Conductor · Juniper Networks
before 7.0.5; 7.1.0 before 7.1.7; 7.2.0 before 7.2.3 · source: vendor
SS
Session Smart Router · Juniper Networks
before 7.0.5; 7.1.0 before 7.1.7; 7.2.0 before 7.2.3 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-103390
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-103390
vendor-advisory
https://supportportal.juniper.net/JSA112183
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