CVE-2023-44195
Junos OS Evolved: Packets which are not destined to the router can reach the RE
An Improper Restriction of Communication Channel to Intended Endpoints vulnerability in the NetworkStack agent daemon (nsagentd) of Juniper Networks Junos OS Evolved allows an unauthenticated network based attacker to cause limited impact to the availability of the system.
If specific packets reach the Routing-Engine (RE) these will be processed normally even if firewall filters are in place which should have prevented this. This can lead to a limited, increased consumption of resources resulting in a Denial-of-Service (DoS), and unauthorized access.
CVE-2023-44196 is a prerequisite for this issue.
This issue affects Juniper Networks Junos OS Evolved:
- 21.3-EVO versions prior to 21.3R3-S5-EVO;
- 21.4-EVO versions prior to 21.4R3-S4-EVO;
- 22.1-EVO version 22.1R1-EVO and later;
- 22.2-EVO version 22.2R1-EVO and later;
- 22.3-EVO versions prior to 22.3R2-S2-EVO, 22.3R3-S1-EVO;
- 22.4-EVO versions prior to 22.4R3-EVO.
This issue doesn't not affected Junos OS Evolved versions prior to 21.3R1-EVO.
Attack profile
How easy it is to exploit
- Attack vector
- Adjacent network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
Junos OS Evolved: Packets which are not destined to the router can reach the RE
An Improper Restriction of Communication Channel to Intended Endpoints vulnerability in the NetworkStack agent daemon (nsagentd) of Juniper Networks Junos OS Evolved allows an unauthenticated network based attacker to cause limited impact to the availability of the system.
If specific packets reach the Routing-Engine (RE) these will be processed normally even if firewall filters are in place which should have prevented this. This can lead to a limited, increased consumption of resources resulting in a Denial-of-Service (DoS), and unauthorized access.
CVE-2023-44196 is a prerequisite for this issue.
This issue affects Juniper Networks Junos OS Evolved:
- 21.3-EVO versions prior to 21.3R3-S5-EVO;
- 21.4-EVO versions prior to 21.4R3-S4-EVO;
- 22.1-EVO version 22.1R1-EVO and later;
- 22.2-EVO version 22.2R1-EVO and later;
- 22.3-EVO versions prior to 22.3R2-S2-EVO, 22.3R3-S1-EVO;
- 22.4-EVO versions prior to 22.4R3-EVO.
This issue doesn't not affected Junos OS Evolved versions prior to 21.3R1-EVO.
- Record
CVE-2023-44195- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L - Weakness
- CWE-923
- Updated
- 2026-11-02
EUVDEUVD-2023-48554
An Improper Restriction of Communication Channel to Intended Endpoints vulnerability in the NetworkStack agent daemon (nsagentd) of Juniper Networks Junos OS Evolved allows an unauthenticated network based attacker to cause limited impact to the availability of the system.
If specific packets reach the Routing-Engine (RE) these will be processed normally even if firewall filters are in place which should have prevented this. This can lead to a limited, increased consumption of resources resulting in a Denial-of-Service (DoS), and unauthorized access.
CVE-2023-44196 is a prerequisite for this issue.
This issue affects Juniper Networks Junos OS Evolved:
- 21.3-EVO versions prior to 21.3R3-S5-EVO;
- 21.4-EVO versions prior to 21.4R3-S4-EVO;
- 22.1-EVO version 22.1R1-EVO and later;
- 22.2-EVO version 22.2R1-EVO and later;
- 22.3-EVO versions prior to 22.3R2-S2-EVO, 22.3R3-S1-EVO;
- 22.4-EVO versions prior to 22.4R3-EVO.
This issue doesn't not affected Junos OS Evolved versions prior to 21.3R1-EVO.
- Record
EUVD-2023-48554- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-f7rx-678f-vf6q
An Improper Restriction of Communication Channel to Intended Endpoints vulnerability in the...
An Improper Restriction of Communication Channel to Intended Endpoints vulnerability in the NetworkStack agent daemon (nsagentd) of Juniper Networks Junos OS Evolved allows an unauthenticated network based attacker to cause limited impact to the availability of the system.
If specific packets reach the Routing-Engine (RE) these will be processed normally even if firewall filters are in place which should have prevented this. This can lead to a limited, increased consumption of resources resulting in a Denial-of-Service (DoS), and unauthorized access.
CVE-2023-44196 is a prerequisite for this issue.
This issue affects Juniper Networks Junos OS Evolved:
- 21.3-EVO versions prior to 21.3R3-S5-EVO;
- 21.4-EVO versions prior to 21.4R3-S4-EVO;
- 22.1-EVO version 22.1R1-EVO and later;
- 22.2-EVO version 22.2R1-EVO and later;
- 22.3-EVO versions prior to 22.3R2-S2-EVO, 22.3R3-S1-EVO;
- 22.4-EVO versions prior to 22.4R3-EVO.
This issue doesn't not affected Junos OS Evolved versions prior to 21.3R1-EVO.
- Record
GHSA-f7rx-678f-vf6q- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L - Weakness
- CWE-923
- Updated
- 2026-11-02
NVD
An Improper Restriction of Communication Channel to Intended Endpoints vulnerability in the NetworkStack agent daemon (nsagentd) of Juniper Networks Junos OS Evolved allows an unauthenticated network based attacker to cause limited impact to the availability of the system.
If specific packets reach the Routing-Engine (RE) these will be processed normally even if firewall filters are in place which should have prevented this. This can lead to a limited, increased consumption of resources resulting in a Denial-of-Service (DoS), and unauthorized access.
CVE-2023-44196 is a prerequisite for this issue.
This issue affects Juniper Networks Junos OS Evolved:
- 21.3-EVO versions prior to 21.3R3-S5-EVO;
- 21.4-EVO versions prior to 21.4R3-S4-EVO;
- 22.1-EVO version 22.1R1-EVO and later;
- 22.2-EVO version 22.2R1-EVO and later;
- 22.3-EVO versions prior to 22.3R2-S2-EVO, 22.3R3-S1-EVO;
- 22.4-EVO versions prior to 22.4R3-EVO.
This issue doesn't not affected Junos OS Evolved versions prior to 21.3R1-EVO.
- Record
CVE-2023-44195- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L - CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-923
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-44195 is a medium vulnerability (CVSS 5.4) in Juniper Junos Os Evolved, published October 12, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.47%, the 40th percentile. No source names a fixed version.