CVE-2023-44196
Junos OS Evolved: PTX10003 Series: Packets which are not destined to the router can reach the RE
An Improper Check for Unusual or Exceptional Conditions in the Packet Forwarding Engine (pfe) of Juniper Networks Junos OS Evolved on PTX10003 Series allows an unauthenticated adjacent attacker to cause an impact to the integrity of the system.
When specific transit MPLS packets are received by the PFE, these packets are internally forwarded to the RE. This issue is a prerequisite for CVE-2023-44195.
This issue affects Juniper Networks Junos OS Evolved:
- All versions prior to 20.4R3-S8-EVO;
- 21.1-EVO version 21.1R1-EVO and later;
- 21.2-EVO versions prior to 21.2R3-S6-EVO;
- 21.3-EVO version 21.3R1-EVO and later;
- 21.4-EVO versions prior to 21.4R3-S3-EVO;
- 22.1-EVO versions prior to 22.1R3-S4-EVO;
- 22.2-EVO versions prior to 22.2R3-S3-EVO;
- 22.3-EVO versions prior to 22.3R2-S2-EVO, 22.3R3-EVO;
- 22.4-EVO versions prior to 22.4R2-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
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Junos OS Evolved: PTX10003 Series: Packets which are not destined to the router can reach the RE
An Improper Check for Unusual or Exceptional Conditions in the Packet Forwarding Engine (pfe) of Juniper Networks Junos OS Evolved on PTX10003 Series allows an unauthenticated adjacent attacker to cause an impact to the integrity of the system.
When specific transit MPLS packets are received by the PFE, these packets are internally forwarded to the RE. This issue is a prerequisite for CVE-2023-44195.
This issue affects Juniper Networks Junos OS Evolved:
- All versions prior to 20.4R3-S8-EVO;
- 21.1-EVO version 21.1R1-EVO and later;
- 21.2-EVO versions prior to 21.2R3-S6-EVO;
- 21.3-EVO version 21.3R1-EVO and later;
- 21.4-EVO versions prior to 21.4R3-S3-EVO;
- 22.1-EVO versions prior to 22.1R3-S4-EVO;
- 22.2-EVO versions prior to 22.2R3-S3-EVO;
- 22.3-EVO versions prior to 22.3R2-S2-EVO, 22.3R3-EVO;
- 22.4-EVO versions prior to 22.4R2-EVO.
- Record
CVE-2023-44196- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-754
- Updated
- 2026-11-02
EUVDEUVD-2023-48555
An Improper Check for Unusual or Exceptional Conditions in the Packet Forwarding Engine (pfe) of Juniper Networks Junos OS Evolved on PTX10003 Series allows an unauthenticated adjacent attacker to cause an impact to the integrity of the system.
When specific transit MPLS packets are received by the PFE, these packets are internally forwarded to the RE. This issue is a prerequisite for CVE-2023-44195.
This issue affects Juniper Networks Junos OS Evolved:
- All versions prior to 20.4R3-S8-EVO;
- 21.1-EVO version 21.1R1-EVO and later;
- 21.2-EVO versions prior to 21.2R3-S6-EVO;
- 21.3-EVO version 21.3R1-EVO and later;
- 21.4-EVO versions prior to 21.4R3-S3-EVO;
- 22.1-EVO versions prior to 22.1R3-S4-EVO;
- 22.2-EVO versions prior to 22.2R3-S3-EVO;
- 22.3-EVO versions prior to 22.3R2-S2-EVO, 22.3R3-EVO;
- 22.4-EVO versions prior to 22.4R2-EVO.
- Record
EUVD-2023-48555- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-ghc9-27wr-4w58
An Improper Check for Unusual or Exceptional Conditions in the Packet Forwarding Engine (pfe) of...
An Improper Check for Unusual or Exceptional Conditions in the Packet Forwarding Engine (pfe) of Juniper Networks Junos OS Evolved on PTX10003 Series allows an unauthenticated adjacent attacker to cause an impact to the integrity of the system.
When specific transit MPLS packets are received by the PFE, these packets are internally forwarded to the RE. This issue is a prerequisite for CVE-2023-44195.
This issue affects Juniper Networks Junos OS Evolved:
- All versions prior to 20.4R3-S8-EVO;
- 21.1-EVO version 21.1R1-EVO and later;
- 21.2-EVO versions prior to 21.2R3-S6-EVO;
- 21.3-EVO version 21.3R1-EVO and later;
- 21.4-EVO versions prior to 21.4R3-S3-EVO;
- 22.1-EVO versions prior to 22.1R3-S4-EVO;
- 22.2-EVO versions prior to 22.2R3-S3-EVO;
- 22.3-EVO versions prior to 22.3R2-S2-EVO, 22.3R3-EVO;
- 22.4-EVO versions prior to 22.4R2-EVO.
- Record
GHSA-ghc9-27wr-4w58- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-754
- Updated
- 2026-11-02
NVD
An Improper Check for Unusual or Exceptional Conditions in the Packet Forwarding Engine (pfe) of Juniper Networks Junos OS Evolved on PTX10003 Series allows an unauthenticated adjacent attacker to cause an impact to the integrity of the system.
When specific transit MPLS packets are received by the PFE, these packets are internally forwarded to the RE. This issue is a prerequisite for CVE-2023-44195.
This issue affects Juniper Networks Junos OS Evolved:
- All versions prior to 20.4R3-S8-EVO;
- 21.1-EVO version 21.1R1-EVO and later;
- 21.2-EVO versions prior to 21.2R3-S6-EVO;
- 21.3-EVO version 21.3R1-EVO and later;
- 21.4-EVO versions prior to 21.4R3-S3-EVO;
- 22.1-EVO versions prior to 22.1R3-S4-EVO;
- 22.2-EVO versions prior to 22.2R3-S3-EVO;
- 22.3-EVO versions prior to 22.3R2-S2-EVO, 22.3R3-EVO;
- 22.4-EVO versions prior to 22.4R2-EVO.
- Record
CVE-2023-44196- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-754
- 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-2023-44196 is a medium vulnerability (CVSS 6.5) 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 0.27%, the 19th percentile. No source names a fixed version.