CVE-2026-45497
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 Microsoft Copilot allows an authorized attacker to execute code 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 confidenceCommand injection vulnerability in Microsoft Copilot allows an authorized attacker to inject malicious commands due to improper neutralization of special elements in input, enabling remote code execution over a network.
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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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 Copilot presenceInventory your systems for Microsoft Copilot installations - this includes Copilot for Microsoft 365, Copilot Pro, Copilot for Windows, or any Copilot-integrated Office applications. Check installed programs list, application launchers, and add-ins across user workstations and servers.Affected if Microsoft Copilot of any variant is installed and active in the environment
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Identify Copilot variant and versionLocate the specific Copilot product in use (e.g., Copilot for Microsoft 365, Copilot for Windows, standalone Copilot app). Determine the exact version or build number through the application's About or Settings menu, or via system inventory tools.Affected if Any version of Microsoft Copilot is identified - all versions are affected according to the CVE
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Assess network accessibilityDetermine whether Copilot services are exposed to network access beyond the intended internal users. Review firewall rules, conditional access policies, and authentication settings that govern who can reach Copilot endpoints. Check if guest or external user access is enabled.Affected if Copilot is accessible to users outside the trusted internal network or to unauthorized accounts
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Review for suspicious command patternsExamine Copilot interaction logs, Microsoft 365 audit logs, and security information and event management (SIEM) records for unusual commands, unexpected code execution requests, or anomalous AI prompts that may indicate exploitation attempts.
Your environment is affected if Microsoft Copilot (any variant) is installed and accessible, regardless of version - all versions are vulnerable to this command injection flaw.
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 Microsoft security patches when available; until then, restrict Copilot access to trusted users only, monitor for suspicious command patterns, and consider network segmentation to limit exposure.
- Consultation4.0 h
- Implementation2.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,152.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-45497 — 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-2026-45497 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
- No weaponised exploit code, or anything meant to cause harm
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