Vulnerability · CVE-2025-52963
An Improper Access Control vulnerability in the User Interface (UI) of Juniper Networks Junos OS allows a local, low-privileged attacker to bring down an interface, leading to a De
Published Jul 11, 2025 · catalog updated Jul 11, 2025 · Juniper Networks Junos OS
Check if you run it
No confirmed exploitation is on record for CVE-2025-52963. EPSS is 0.16%. Act only if a listed version of Juniper Networks Junos OS is installed.
Gaps on this record
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- Medium6.8
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.16%
- Remediation
- Version ranges on file
- Affected products
- vendor Juniper Networks Junos OS 23.4 <23.4R2-S5
An Improper Access Control vulnerability in the User Interface (UI) of Juniper Networks Junos OS allows a local, low-privileged attacker to bring down an interface, leading to a Denial-of-Service. Users with "view" permissions can run a specific request interface command which allows the user to shut down the interface. This issue affects Junos OS: * All versions before 21.2R3-S9, * from 21.4 before 21.4R3-S11, * from 22.2 before 22.2R3-S7, * from 22.4 before 22.4R3-S7, * from 23.2 before 23.2R2-S4, * from 23.4 before 23.4R2-S5, * from 24.2 before 24.2R2-S1, * from 24.4 before 24.4R1-S3, 24.4R
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- vendor Juniper Networks Junos OS 23.4 <23.4R2-S523.4 <23.4R2-S5
How to fix CVE-2025-52963
Recommended remediation
Affected version ranges suggest a fixed boundary. Verify against the vendor advisory for your release.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2025-52963. EPSS is 0.16%. Act only if a listed version of Juniper Networks Junos OS is installed.
Which versions are affected?
Compare what you have installed with Juniper Networks Junos OS 23.4 <23.4R2-S5 23.4 <23.4R2-S5. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 0.16%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Jul 11, 2025 · EUVD
Detected
An Improper Access Control vulnerability in the User Interface (UI) of Juniper Networks Junos OS allows a local, low-privileged attacker to bring down an interface, leading to a Denial-of-Service. Users with "view" permissions can run a specific request interface command which allows the user to shut down the interface. This issue affects Junos OS: * All versions before 21.2R3-S9, * from 21.4 befo
Jul 11, 2025 · EUVD
Updated
An Improper Access Control vulnerability in the User Interface (UI) of Juniper Networks Junos OS allows a local, low-privileged attacker to bring down an interface, leading to a Denial-of-Service. Users with "view" permissions can run a specific request interface command which allows the user to shut down the interface. This issue affects Junos OS: * All versions before 21.2R3-S9, * from 21.4 befo
Sources
- CVE.orgVulnerability recordCVE-2025-52963
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2025-52963
30-day exploitation probability 0.16%
first.org - EUVDVulnerability recordEUVD-2025-21151
An Improper Access Control vulnerability in the User Interface (UI) of Juniper Networks Junos OS allows a local, low-privileged attacker to bring down an interface, leading to a Denial-of-Service. Users with "view" permissions can run a specific request interface command which al
euvd.enisa.europa.eu
References
Freshness
Last verified in this catalog Oct 23, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.