CVE-2024-39553
Junos OS Evolved: Receipt of arbitrary data when sampling service is enabled, leads to partial Denial of Service (DoS).
An Exposure of Resource to Wrong Sphere vulnerability in the sampling service of Juniper Networks Junos OS Evolved allows an unauthenticated network-based attacker to send arbitrary data to the device, which leads msvcsd process to crash with limited availability impacting Denial of Service (DoS) and allows unauthorized network access to the device, potentially impacting system integrity.
This issue only happens when inline jflow is configured.
This does not impact any forwarding traffic. The impacted services MSVCS-DB app crashes momentarily and recovers by itself.
This issue affects Juniper Networks Junos OS Evolved:
- 21.4 versions earlier than 21.4R3-S7-EVO;
- 22.2 versions earlier than 22.2R3-S3-EVO;
- 22.3 versions earlier than 22.3R3-S2-EVO;
- 22.4 versions earlier than 22.4R3-EVO;
- 23.2 versions earlier than 23.2R1-S2-EVO, 23.2R2-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
- Low
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
Junos OS Evolved: Receipt of arbitrary data when sampling service is enabled, leads to partial Denial of Service (DoS).
An Exposure of Resource to Wrong Sphere vulnerability in the sampling service of Juniper Networks Junos OS Evolved allows an unauthenticated network-based attacker to send arbitrary data to the device, which leads msvcsd process to crash with limited availability impacting Denial of Service (DoS) and allows unauthorized network access to the device, potentially impacting system integrity.
This issue only happens when inline jflow is configured.
This does not impact any forwarding traffic. The impacted services MSVCS-DB app crashes momentarily and recovers by itself.
This issue affects Juniper Networks Junos OS Evolved:
- 21.4 versions earlier than 21.4R3-S7-EVO;
- 22.2 versions earlier than 22.2R3-S3-EVO;
- 22.3 versions earlier than 22.3R3-S2-EVO;
- 22.4 versions earlier than 22.4R3-EVO;
- 23.2 versions earlier than 23.2R1-S2-EVO, 23.2R2-EVO.
- Record
CVE-2024-39553- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:L/R:A - CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L - Weakness
- CWE-668
- Updated
- 2026-11-02
EUVDEUVD-2024-38079
An Exposure of Resource to Wrong Sphere vulnerability in the sampling service of Juniper Networks Junos OS Evolved allows an unauthenticated network-based attacker to send arbitrary data to the device, which leads msvcsd process to crash with limited availability impacting Denial of Service (DoS) and allows unauthorized network access to the device, potentially impacting system integrity.
This issue only happens when inline jflow is configured.
This does not impact any forwarding traffic. The impacted services MSVCS-DB app crashes momentarily and recovers by itself.
This issue affects Juniper Networks Junos OS Evolved:
- 21.4 versions earlier than 21.4R3-S7-EVO;
- 22.2 versions earlier than 22.2R3-S3-EVO;
- 22.3 versions earlier than 22.3R3-S2-EVO;
- 22.4 versions earlier than 22.4R3-EVO;
- 23.2 versions earlier than 23.2R1-S2-EVO, 23.2R2-EVO.
- Record
EUVD-2024-38079- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:L/R:A - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-48wm-jcwq-6m89
An Exposure of Resource to Wrong Sphere vulnerability in the sampling service of Juniper Networks...
An Exposure of Resource to Wrong Sphere vulnerability in the sampling service of Juniper Networks Junos OS Evolved allows an unauthenticated network-based attacker to send arbitrary data to the device, which leads msvcsd process to crash with limited availability impacting Denial of Service (DoS) and allows unauthorized network access to the device, potentially impacting system integrity.
This issue only happens when inline jflow is configured.
This does not impact any forwarding traffic. The impacted services MSVCS-DB app crashes momentarily and recovers by itself.
This issue affects Juniper Networks Junos OS Evolved:
- 21.4 versions earlier than 21.4R3-S7-EVO;
- 22.2 versions earlier than 22.2R3-S3-EVO;
- 22.3 versions earlier than 22.3R3-S2-EVO;
- 22.4 versions earlier than 22.4R3-EVO;
- 23.2 versions earlier than 23.2R1-S2-EVO, 23.2R2-EVO.
- Record
GHSA-48wm-jcwq-6m89- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/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:A/V:X/RE:X/U:X - CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L - Weakness
- CWE-668
- Updated
- 2026-11-02
NVD
An Exposure of Resource to Wrong Sphere vulnerability in the sampling service of Juniper Networks Junos OS Evolved allows an unauthenticated network-based attacker to send arbitrary data to the device, which leads msvcsd process to crash with limited availability impacting Denial of Service (DoS) and allows unauthorized network access to the device, potentially impacting system integrity.
This issue only happens when inline jflow is configured.
This does not impact any forwarding traffic. The impacted services MSVCS-DB app crashes momentarily and recovers by itself.
This issue affects Juniper Networks Junos OS Evolved:
- 21.4 versions earlier than 21.4R3-S7-EVO;
- 22.2 versions earlier than 22.2R3-S3-EVO;
- 22.3 versions earlier than 22.3R3-S2-EVO;
- 22.4 versions earlier than 22.4R3-EVO;
- 23.2 versions earlier than 23.2R1-S2-EVO, 23.2R2-EVO.
- Record
CVE-2024-39553- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/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:A/V:X/RE:X/U:X - CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L - Weakness
- CWE-668
- 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-2024-39553 is a medium vulnerability (CVSS 6.9) in Juniper Junos Os Evolved, published July 11, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.40%, the 34th percentile. No source names a fixed version.