CVE-2023-44197
Junos OS and Junos OS Evolved: An rpd crash may occur when BGP is processing newly learned routes
An Out-of-Bounds Write vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).
On all Junos OS and Junos OS Evolved devices an rpd crash and restart can occur while processing BGP route updates received over an established BGP session. This specific issue is observed for BGP routes learned via a peer which is configured with a BGP import policy that has hundreds of terms matching IPv4 and/or IPv6 prefixes.
This issue affects Juniper Networks Junos OS:
- All versions prior to 20.4R3-S8;
- 21.1 version 21.1R1 and later versions;
- 21.2 versions prior to 21.2R3-S2;
- 21.3 versions prior to 21.3R3-S5;
- 21.4 versions prior to 21.4R2-S1, 21.4R3-S5.
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 versions;
- 21.2-EVO versions prior to 21.2R3-S2-EVO;
- 21.3-EVO version 21.3R1-EVO and later versions;
- 21.4-EVO versions prior to 21.4R2-S1-EVO, 21.4R3-S5-EVO.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Junos OS and Junos OS Evolved: An rpd crash may occur when BGP is processing newly learned routes
An Out-of-Bounds Write vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).
On all Junos OS and Junos OS Evolved devices an rpd crash and restart can occur while processing BGP route updates received over an established BGP session. This specific issue is observed for BGP routes learned via a peer which is configured with a BGP import policy that has hundreds of terms matching IPv4 and/or IPv6 prefixes.
This issue affects Juniper Networks Junos OS:
- All versions prior to 20.4R3-S8;
- 21.1 version 21.1R1 and later versions;
- 21.2 versions prior to 21.2R3-S2;
- 21.3 versions prior to 21.3R3-S5;
- 21.4 versions prior to 21.4R2-S1, 21.4R3-S5.
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 versions;
- 21.2-EVO versions prior to 21.2R3-S2-EVO;
- 21.3-EVO version 21.3R1-EVO and later versions;
- 21.4-EVO versions prior to 21.4R2-S1-EVO, 21.4R3-S5-EVO.
- Record
CVE-2023-44197- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-787
- Updated
- 2026-11-02
EUVDEUVD-2023-48556
An Out-of-Bounds Write vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).
On all Junos OS and Junos OS Evolved devices an rpd crash and restart can occur while processing BGP route updates received over an established BGP session. This specific issue is observed for BGP routes learned via a peer which is configured with a BGP import policy that has hundreds of terms matching IPv4 and/or IPv6 prefixes.
This issue affects Juniper Networks Junos OS:
- All versions prior to 20.4R3-S8;
- 21.1 version 21.1R1 and later versions;
- 21.2 versions prior to 21.2R3-S2;
- 21.3 versions prior to 21.3R3-S5;
- 21.4 versions prior to 21.4R2-S1, 21.4R3-S5.
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 versions;
- 21.2-EVO versions prior to 21.2R3-S2-EVO;
- 21.3-EVO version 21.3R1-EVO and later versions;
- 21.4-EVO versions prior to 21.4R2-S1-EVO, 21.4R3-S5-EVO.
- Record
EUVD-2023-48556- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-66qc-5f4v-2m8h
An Out-of-Bounds Write vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks...
An Out-of-Bounds Write vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).
On all Junos OS and Junos OS Evolved devices an rpd crash and restart can occur while processing BGP route updates received over an established BGP session. This specific issue is observed for BGP routes learned via a peer which is configured with a BGP import policy that has hundreds of terms matching IPv4 and/or IPv6 prefixes.
This issue affects Juniper Networks Junos OS:
- All versions prior to 20.4R3-S8;
- 21.1 version 21.1R1 and later versions;
- 21.2 versions prior to 21.2R3-S2;
- 21.3 versions prior to 21.3R3-S5;
- 21.4 versions prior to 21.4R2-S1, 21.4R3-S5.
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 versions;
- 21.2-EVO versions prior to 21.2R3-S2-EVO;
- 21.3-EVO version 21.3R1-EVO and later versions;
- 21.4-EVO versions prior to 21.4R2-S1-EVO, 21.4R3-S5-EVO.
- Record
GHSA-66qc-5f4v-2m8h- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-787
- Updated
- 2026-11-02
NVD
An Out-of-Bounds Write vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).
On all Junos OS and Junos OS Evolved devices an rpd crash and restart can occur while processing BGP route updates received over an established BGP session. This specific issue is observed for BGP routes learned via a peer which is configured with a BGP import policy that has hundreds of terms matching IPv4 and/or IPv6 prefixes.
This issue affects Juniper Networks Junos OS:
- All versions prior to 20.4R3-S8;
- 21.1 version 21.1R1 and later versions;
- 21.2 versions prior to 21.2R3-S2;
- 21.3 versions prior to 21.3R3-S5;
- 21.4 versions prior to 21.4R2-S1, 21.4R3-S5.
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 versions;
- 21.2-EVO versions prior to 21.2R3-S2-EVO;
- 21.3-EVO version 21.3R1-EVO and later versions;
- 21.4-EVO versions prior to 21.4R2-S1-EVO, 21.4R3-S5-EVO.
- Record
CVE-2023-44197- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-787
- 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-2023-44197 is a high vulnerability (CVSS 7.5) in Juniper Junos, published October 12, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.62%, the 49th percentile. No source names a fixed version.