CVE-2025-59997
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedAn Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Juniper Networks Junos Space allows an attacker to inject script tags in the CLI Configlets pages that, when visited by another user, enable the attacker to execute commands with the target's permissions, including an administrator. This issue affects all versions of Junos Space before 24.1R4.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceA stored Cross-site Scripting (XSS) vulnerability exists in Junos Space's CLI Configlets functionality. Attackers can inject malicious script tags into Configlets pages, which then execute in the browsers of other users who view those pages, allowing command execution with the victim user's permissions (including administrators).
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 24.1= 24.1CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify Junos Space versionLog into the Junos Space web UI and navigate to the Administration > System > Platform menu, or run 'show version' via the CLI to determine the installed Junos Space version.Affected if The installed version is less than 24.1 or equals exactly 24.1.
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Verify Configlets functionality is accessibleNavigate to the CLI Configlets section in the Junos Space web UI (typically under Devices > Configlets or a similar path depending on the exact version). Determine whether this feature is present and accessible to users.Affected if The Configlets feature exists and is accessible in the environment.
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Review existing Configlets for suspicious contentExamine all CLI Configlets stored in the system for any unexpected or malicious script tags (<script>, javascript:, onload, onerror, etc.) that could indicate prior exploitation.Affected if Any Configlets contain script injection payloads or unexpected HTML/JavaScript content.
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Check audit logs for Configlet modificationsReview Junos Space audit logs for recent changes to Configlets, particularly those created or modified by unexpected users or containing suspicious patterns.Affected if Audit logs show Configlet modifications with injected script content or unexpected authoring.
The environment is affected if Junos Space version is less than 24.1 or exactly 24.1 AND the Configlets functionality is accessible to users.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped24.1
Upgrade to Junos Space version 24.1R4 or later to patch this vulnerability. Until upgrade is possible, consider restricting access to the Configlets functionality or implementing a WAF rule to block script injection attempts.
24.1R4
- 1. Back up the current Junos Space configuration and database using the built-in backup functionality
- 2. Download Junos Space version 24.1R4 from the Juniper Networks support portal (supportportal.juniper.net)
- 3. Log into the Junos Space web interface as an administrator
- 4. Navigate to the Administration section and locate the Software Upgrade or Update option
- 5. Upload the 24.1R4 upgrade image and initiate the upgrade process
- 6. Wait for the upgrade to complete and for the system to reboot
- 7. Log back into Junos Space and verify the upgrade was successful by checking the version number in the web interface or via CLI
- 8. Navigate to the CLI Configlets pages mentioned in the CVE to verify the XSS vulnerability is no longer present
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation6.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-59997 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-59997 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
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