CVE-2025-59286
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 · uneditedImproper neutralization of special elements used in a command ('command injection') in Copilot allows an unauthorized attacker to disclose information over a network.
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 · moderate confidenceA command injection vulnerability exists in Copilot where improper neutralization of special elements allows an unauthorized attacker to execute arbitrary commands and disclose information over a network. The critical severity (CVSS 9.3) indicates the vulnerability is easily exploitable and has significant potential for impact.
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 dataall versionsCVSS 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
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/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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Confirm Microsoft 365 Copilot Chat usageCheck your Microsoft 365 admin center or user assignments to determine if Copilot Chat features are enabled or assigned to users in your organizationAffected if Copilot Chat is enabled or assigned to any users in the tenant - since all versions are affected, any active use means the environment is vulnerable
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Identify Copilot Chat endpointsReview Microsoft 365 audit logs or network logs for traffic to copilot.microsoft.com or related Copilot Chat endpointsAffected if Outbound traffic to Microsoft Copilot Chat services is observed from your network
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Assess network exposureCheck firewall or proxy rules that allow traffic to Microsoft 365 Copilot Chat endpoints. Determine if the service is accessible from internal networks without additional authentication layers beyond Microsoft 365Affected if Direct network access to Copilot Chat exists without restrictive controls
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Review user access controlsExamine Microsoft 365 conditional access policies to determine if Copilot Chat access is restricted to managed devices or specific user groups, or if it is broadly availableAffected if Copilot Chat is broadly accessible to users without additional security controls beyond standard Microsoft 365 authentication
If Microsoft 365 Copilot Chat is enabled and accessible to users in your organization, your environment is affected since all versions of this cloud service contain the command injection vulnerability.
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.
From vendor dataApply vendor-provided patches when available. In general, implement strict input validation and avoid passing unsanitized user input to system command execution functions. Restrict network access to the affected Copilot service.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,176.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-59286 — 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-2025-59286 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data