CVE-2025-52955
Junos OS and Junos OS Evolved: When jflow/sflow is configured continuous logical interface flaps causes rpd crash and restart
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
An Incorrect Calculation of Buffer Size vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS allows an adjacent unauthenticated attacker to cause a memory corruption that leads to a rpd crash. When
the logical interface using a routing instance flaps continuously, specific updates are sent to the jflow/sflow modules. This results in memory corruption, leading to an rpd crash and restart. Continued receipt of these specific updates will cause a sustained Denial of Service condition. This issue affects Junos OS: * All versions before 21.2R3-S9, * All versions of 21.4, * All versions of 22.2, * from 22.4 before 22.4R3-S7, * from 23.2 before 23.2R2-S3, * from 23.4 before 23.4R2-S4, * from 24.2 before 24.2R2.
An Incorrect Calculation of Buffer Size vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent unauthenticated attacker to cause a memory corruption that leads to a rpd crash. When
the logical interface using a routing instance flaps continuously, specific updates are sent to the jflow/sflow modules. This results in memory corruption, leading to an rpd crash and restart. Continued receipt of these specific updates will cause a sustained Denial of Service condition. This issue affects Junos OS: * All versions before 21.2R3-S9, * All versions of 21.4, * All versions of 22.2, * from 22.4 before 22.4R3-S7, * from 23.2 before 23.2R2-S3, * from 23.4 before 23.4R2-S4, * from 24.2 before 24.2R2. Junos OS Evolved: * All versions of 21.2-EVO, * All versions of 21.4-EVO, * All versions of 22.2-EVO, * from 22.4 before 22.4R3-S7-EVO, * from 23.2 before 23.2R2-S3-EVO, * from 23.4 before 23.4R2-S4-EVO, * from 24.2 before 24.2R2-EVO.
An Incorrect Calculation of Buffer Size vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS allows an adjacent unauthenticated attacker to cause a memory corruption that leads to a rpd crash. When the logical interface using a routing instance flaps continuously, specific updates are sent to the jflow/sflow modules. This results in memory corruption, leading to an rpd crash and restart. Continued receipt of these specific updates will cause a sustained Denial of Service condition. This issue affects Junos OS: * All versions before 21.2R3-S9, * All versions of 21.4, * All versions of 22.2, * from 22.4 before 22.4R3-S7, * from 23.2 before 23.2R2-S3, * from 23.4 before 23.4R2-S4, * from 24.2 before 24.2R2.
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2025-06-23 CVE Reserved
- 2025-07-11 CVE Published
- 2025-07-14 CVE Updated
- 2025-07-17 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-131: Incorrect Calculation of Buffer Size
CAPEC
References (1)
URL | Tag | Source |
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URL | Date | SRC |
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URL | Date | SRC |
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URL | Date | SRC |
---|---|---|
https://supportportal.juniper.net/JSA100062 | 2025-07-11 |
Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Juniper Networks Search vendor "Juniper Networks" | Junos OS Search vendor "Juniper Networks" for product "Junos OS" | < 21.2R3-S9 Search vendor "Juniper Networks" for product "Junos OS" and version " < 21.2R3-S9" | en |
Affected
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Juniper Networks Search vendor "Juniper Networks" | Junos OS Search vendor "Juniper Networks" for product "Junos OS" | >= 21.4 < 21.4* Search vendor "Juniper Networks" for product "Junos OS" and version " >= 21.4 < 21.4*" | en |
Affected
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Juniper Networks Search vendor "Juniper Networks" | Junos OS Search vendor "Juniper Networks" for product "Junos OS" | >= 22.2 < 22.2* Search vendor "Juniper Networks" for product "Junos OS" and version " >= 22.2 < 22.2*" | en |
Affected
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Juniper Networks Search vendor "Juniper Networks" | Junos OS Search vendor "Juniper Networks" for product "Junos OS" | >= 22.4 < 22.4R3-S7 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 22.4 < 22.4R3-S7" | en |
Affected
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Juniper Networks Search vendor "Juniper Networks" | Junos OS Search vendor "Juniper Networks" for product "Junos OS" | >= 23.2 < 23.2R2-S3 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 23.2 < 23.2R2-S3" | en |
Affected
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Juniper Networks Search vendor "Juniper Networks" | Junos OS Search vendor "Juniper Networks" for product "Junos OS" | >= 23.4 < 23.4R2-S4 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 23.4 < 23.4R2-S4" | en |
Affected
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Juniper Networks Search vendor "Juniper Networks" | Junos OS Search vendor "Juniper Networks" for product "Junos OS" | >= 24.2 < 24.2R2 Search vendor "Juniper Networks" for product "Junos OS" and version " >= 24.2 < 24.2R2" | en |
Affected
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Juniper Networks Search vendor "Juniper Networks" | Junos OS Evolved Search vendor "Juniper Networks" for product "Junos OS Evolved" | < 21.2*-EVO Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " < 21.2*-EVO" | en |
Affected
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Juniper Networks Search vendor "Juniper Networks" | Junos OS Evolved Search vendor "Juniper Networks" for product "Junos OS Evolved" | >= 21.4 < 21.4*-EVO Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " >= 21.4 < 21.4*-EVO" | en |
Affected
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Juniper Networks Search vendor "Juniper Networks" | Junos OS Evolved Search vendor "Juniper Networks" for product "Junos OS Evolved" | >= 22.2 < 22.2*-EVO Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " >= 22.2 < 22.2*-EVO" | en |
Affected
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Juniper Networks Search vendor "Juniper Networks" | Junos OS Evolved Search vendor "Juniper Networks" for product "Junos OS Evolved" | >= 22.4 < 22.4R3-S7-EVO Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " >= 22.4 < 22.4R3-S7-EVO" | en |
Affected
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Juniper Networks Search vendor "Juniper Networks" | Junos OS Evolved Search vendor "Juniper Networks" for product "Junos OS Evolved" | >= 23.2 < 23.2R2-S3-EVO Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " >= 23.2 < 23.2R2-S3-EVO" | en |
Affected
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Juniper Networks Search vendor "Juniper Networks" | Junos OS Evolved Search vendor "Juniper Networks" for product "Junos OS Evolved" | >= 23.4 < 23.4R2-S4-EVO Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " >= 23.4 < 23.4R2-S4-EVO" | en |
Affected
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Juniper Networks Search vendor "Juniper Networks" | Junos OS Evolved Search vendor "Juniper Networks" for product "Junos OS Evolved" | >= 24.2 < 24.2R2-EVO Search vendor "Juniper Networks" for product "Junos OS Evolved" and version " >= 24.2 < 24.2R2-EVO" | en |
Affected
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