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🛡️ CVE-2025-52989 — junos

🟡 CVSS 5.1 — Medium ✅ No Known Exploit CWE-140 NVD
5.1
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

An Improper Neutralization of Delimiters vulnerability in the UI of Juniper Networks Junos OS and Junos OS Evolved allows a local, authenticated attacker with high privileges to modify the system configuration.

A user with limited configuration and commit permissions, using a specifically crafted annotate configuration command, can change any part of the device configuration.

This issue affects:

 Junos OS: 

  • all versions before 22.2R3-S7,
  • 22.4 versions before 22.4R3-S7,
  • 23.2 versions before 23.2R2-S4,
  • 23.4 versions before 23.4R2-S4,
  • 24.2 versions before 24.2R2-S1,
  • 24.4 versions before 24.4R1-S2, 24.4R2;

Junos OS Evolved:

  • all versions before 22.4R3-S7-EVO,
  • 23.2-EVO versions before 23.2R2-S4-EVO,
  • 23.4-EVO versions before 23.4R2-S5-EVO, 
  • 24.2-EVO versions before 24.2R2-S1-EVO
  • 24.4-EVO versions before 24.4R2-EVO.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs administrative privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity high, availability low.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:L

  • Attack vector: Local — a local account, shell or session on the host is needed.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: High — administrative rights are needed first.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: None.
  • Integrity impact: High — total loss, or loss the attacker controls.
  • Availability impact: Low — limited, and the attacker does not choose what is affected.

Weakness class

CVE-2025-52989 is classified as CWE-140: Improper Neutralization of Delimiters. The product does not neutralize or incorrectly neutralizes delimiters.

Affected software

CVE-2025-52989 is recorded against 2 packages.

  • junos
  • junos-os-evolved

Timeline and source

Published on 11 July 2025 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

supportportal.juniper.net

Other advisories for this package

junos has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-140: Improper Neutralization of Delimiters) in other software:

Details

Severity MEDIUM
CVSS Score 5.1
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:L
CWE CWE-140
Public Exploit ✅ No
Source NVD
Published 2025-07-11
Updated 2026-08-20
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
junos — —
junos-os-evolved — —

References

Similar Threats

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