CVE-2024-39549
Junos OS and Junos OS Evolved: Receipt of malformed BGP path attributes leads to a memory leak
A Missing Release of Memory after Effective Lifetime vulnerability in the routing process daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an attacker to send a malformed BGP Path attribute update which allocates memory used to log the bad path attribute. This memory is not properly freed in all circumstances, leading to a Denial of Service (DoS).
Consumed memory can be freed by manually restarting Routing Protocol Daemon (rpd).
Memory utilization could be monitored by: user@host> show system memory or show system monitor memory status
This issue affects:
Junos OS: * All versions before 21.2R3-S8,
-
from 21.4 before 21.4R3-S8,
-
from 22.2 before 22.2R3-S4,
-
from 22.3 before 22.3R3-S3,
-
from 22.4 before 22.4R3-S3,
-
from 23.2 before 23.2R2-S1,
-
from 23.4 before 23.4R1-S2, 23.4R2.
Junos OS Evolved:
-
All versions before 21.2R3-S8-EVO,
-
from 21.4 before 21.4R3-S8-EVO,
-
from 22.2 before 22.2R3-S4-EVO,
-
from 22.3 before 22.3R3-S3-EVO,
-
from 22.4 before 22.4R3-S3-EVO,
-
from 23.2 before 23.2R2-S1-EVO,
-
from 23.4 before 23.4R1-S2-EVO, 23.4R2-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: Receipt of malformed BGP path attributes leads to a memory leak
A Missing Release of Memory after Effective Lifetime vulnerability in the routing process daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an attacker to send a malformed BGP Path attribute update which allocates memory used to log the bad path attribute. This memory is not properly freed in all circumstances, leading to a Denial of Service (DoS).
Consumed memory can be freed by manually restarting Routing Protocol Daemon (rpd).
Memory utilization could be monitored by: user@host> show system memory or show system monitor memory status
This issue affects:
Junos OS: * All versions before 21.2R3-S8,
-
from 21.4 before 21.4R3-S8,
-
from 22.2 before 22.2R3-S4,
-
from 22.3 before 22.3R3-S3,
-
from 22.4 before 22.4R3-S3,
-
from 23.2 before 23.2R2-S1,
-
from 23.4 before 23.4R1-S2, 23.4R2.
Junos OS Evolved:
-
All versions before 21.2R3-S8-EVO,
-
from 21.4 before 21.4R3-S8-EVO,
-
from 22.2 before 22.2R3-S4-EVO,
-
from 22.3 before 22.3R3-S3-EVO,
-
from 22.4 before 22.4R3-S3-EVO,
-
from 23.2 before 23.2R2-S1-EVO,
-
from 23.4 before 23.4R1-S2-EVO, 23.4R2-EVO.
- Record
CVE-2024-39549- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/R:U - 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-401
- Updated
- 2026-11-02
EUVDEUVD-2024-38075
A Missing Release of Memory after Effective Lifetime vulnerability in the routing process daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an attacker to send a malformed BGP Path attribute update which allocates memory used to log the bad path attribute. This memory is not properly freed in all circumstances, leading to a Denial of Service (DoS).
Consumed memory can be freed by manually restarting Routing Protocol Daemon (rpd).
Memory utilization could be monitored by: user@host> show system memory or show system monitor memory status
This issue affects:
Junos OS: * All versions before 21.2R3-S8,
-
from 21.4 before 21.4R3-S8,
-
from 22.2 before 22.2R3-S4,
-
from 22.3 before 22.3R3-S3,
-
from 22.4 before 22.4R3-S3,
-
from 23.2 before 23.2R2-S1,
-
from 23.4 before 23.4R1-S2, 23.4R2.
Junos OS Evolved:
-
All versions before 21.2R3-S8-EVO,
-
from 21.4 before 21.4R3-S8-EVO,
-
from 22.2 before 22.2R3-S4-EVO,
-
from 22.3 before 22.3R3-S3-EVO,
-
from 22.4 before 22.4R3-S3-EVO,
-
from 23.2 before 23.2R2-S1-EVO,
-
from 23.4 before 23.4R1-S2-EVO, 23.4R2-EVO.
- Record
EUVD-2024-38075- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/R:U - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-hw78-gpfh-vw3q
A Missing Release of Memory after Effective Lifetime vulnerability in the routing process daemon ...
A Missing Release of Memory after Effective Lifetime vulnerability in the routing process daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an attacker to send a malformed BGP Path attribute update which allocates memory used to log the bad path attribute. This memory is not properly freed in all circumstances, leading to a Denial of Service (DoS).
Consumed memory can be freed by manually restarting Routing Protocol Daemon (rpd).
Memory utilization could be monitored by: user@host> show system memory or show system monitor memory status
This issue affects:
Junos OS: * All versions before 21.2R3-S8,
-
from 21.4 before 21.4R3-S8,
-
from 22.2 before 22.2R3-S4,
-
from 22.3 before 22.3R3-S3,
-
from 22.4 before 22.4R3-S3,
-
from 23.2 before 23.2R2-S1,
-
from 23.4 before 23.4R1-S2, 23.4R2,
-
from 24.2 before 24.2R2-EVO.
Junos OS Evolved:
-
All versions before 21.2R3-S8-EVO,
-
from 21.4 before 21.4R3-S8-EVO,
-
from 22.2 before 22.2R3-S4-EVO,
-
from 22.3 before 22.3R3-S3-EVO,
-
from 22.4 before 22.4R3-S3-EVO,
-
from 23.2 before 23.2R2-S1-EVO,
-
from 23.4 before 23.4R1-S2, 23.4R2,
-
from 24.2 before 24.2R2-EVO.
- Record
GHSA-hw78-gpfh-vw3q- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:U/V:X/RE:X/U:X - 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-401
- Updated
- 2026-11-02
NVD
A Missing Release of Memory after Effective Lifetime vulnerability in the routing process daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an attacker to send a malformed BGP Path attribute update which allocates memory used to log the bad path attribute. This memory is not properly freed in all circumstances, leading to a Denial of Service (DoS).
Consumed memory can be freed by manually restarting Routing Protocol Daemon (rpd).
Memory utilization could be monitored by: user@host> show system memory or show system monitor memory status
This issue affects:
Junos OS: * All versions before 21.2R3-S8,
-
from 21.4 before 21.4R3-S8,
-
from 22.2 before 22.2R3-S4,
-
from 22.3 before 22.3R3-S3,
-
from 22.4 before 22.4R3-S3,
-
from 23.2 before 23.2R2-S1,
-
from 23.4 before 23.4R1-S2, 23.4R2.
Junos OS Evolved:
-
All versions before 21.2R3-S8-EVO,
-
from 21.4 before 21.4R3-S8-EVO,
-
from 22.2 before 22.2R3-S4-EVO,
-
from 22.3 before 22.3R3-S3-EVO,
-
from 22.4 before 22.4R3-S3-EVO,
-
from 23.2 before 23.2R2-S1-EVO,
-
from 23.4 before 23.4R1-S2-EVO, 23.4R2-EVO.
- Record
CVE-2024-39549- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:U/V:X/RE:X/U:X - 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-401
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2024-39549 is a high vulnerability (CVSS 8.7) in Juniper Junos, published July 11, 2024. 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.