High severity · published Apr 9, 2026
CVE-2026-33788
Junos OS Evolved: Local, authenticated attacker can gain privileged access to FPCs
7.8
CVSS
0.1%
EPSS
No
On KEV
Description
A Missing Authentication for Critical Function vulnerability in the Flexible PIC Concentrators (FPCs) of Juniper Networks Junos OS Evolved on PTX Series allows a local, authenticated attacker with low privileges to gain direct access to FPCs installed in the device.
A local user with low privileges can gain direct access to the installed FPCs as a high privileged user, which can potentially lead to a full compromise of the affected component.
This issue affects Junos OS Evolved on PTX10004, PTX10008, PTX100016, with JNP10K-LC1201 or JNP10K-LC1202:
* All versions before 21.2R3-S8-EVO,
* 21.4-EVO versions before 21.4R3-S7-EVO,
* 22.2-EVO versions before 22.2R3-S4-EVO,
* 22.3-EVO versions before 22.3R3-S3-EVO,
* 22.4-EVO versions before 22.4R3-S2-EVO,
* 23.2-EVO versions before 23.2R2-EVO.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 1% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
JO
Junos OS Evolved · Juniper Networks
before 21.2R3-S8-EVO; 21.4-EVO before 21.4R3-S7-EVO; 22.2-EVO before 22.2R3-S4-EVO; 22.3-EVO before 22.3R3-S3-EVO; 22.4-EVO before 22.4R3-S2-EVO; 23.2-EVO before 23.2R2-EVO · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-33788
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-33788
Vendor Advisory
https://kb.juniper.net/JSA107806
More from Junos OS Evolved
9.8
CVE-2026-101954
Junos OS and Junos OS Evolved: Unauthenticated network access causes full device takeover when J-Web is enabled
9.8
CVE-2026-101983
Junos OS and Junos OS Evolved: An attacker causes remote code execution when J-Web virtual-domain is configured
9.8
CVE-2026-101982
Junos OS and Junos OS Evolved: A EVPN peer causes an rpd crash or root-level compromise when EVPN-VPWS is used
9.8
CVE-2026-33796
Junos OS and Junos OS Evolved: An attacker causes remote root command execution when BMP route monitoring is enabled
9.8
CVE-2026-33789
Junos OS and Junos OS Evolved: With BGP Monitoring Protocol is enabled, receipt of a specifically crafted BGP route update results in denial of service