CVE-2026-42830
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 · uneditedUntrusted search path in Azure Monitor Agent allows an authorized attacker to elevate privileges locally.
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 confidenceAzure Monitor Agent uses an untrusted search path when loading libraries or executables, allowing a locally authorized attacker to inject malicious DLLs or binaries into the search path and achieve privilege escalation to SYSTEM or higher privileges.
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< 1.42.0CVSS 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
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Changed
- Confidentiality
- None
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/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 Azure Monitor Agent installationCheck the installed version of Azure Monitor Agent. On Windows, this can typically be found in Add/Remove Programs, or by querying the installed programs list via PowerShell (Get-WmiObject -Class Win32_Product or reviewing installed applications in the registry at HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall).Affected if The installed version is below 1.42.0 or cannot be determined to be 1.42.0 or higher.
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Locate Azure Monitor Agent installation directoryIdentify the directory where Azure Monitor Agent is installed. This is typically found in Program Files or Program Files (x86) with a path containing 'Azure Monitor Agent' or 'AMA' in the folder name.Affected if The agent is installed in a directory that may be writable by lower-privileged users.
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Review directory permissions on installation folderExamine file system permissions on the Azure Monitor Agent installation directory and its subdirectories. Use icacls or Get-Acl in PowerShell to list ACLs. Verify that unprivileged users do not have Write or Modify permissions to directories from which the agent loads executables or DLLs.Affected if Non-admin users have Write, Modify, or Create permissions to directories in the agent's executable search path.
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Check for DLL search order hijacking vectorsReview the agent's executable locations and identify any directories in the system PATH or application-specific paths that precede system directories. Look for writable directories that could be manipulated to place malicious DLLs with common names (e.g., version.dll, msvcrt.dll).Affected if Writable directories exist in locations that the agent may search before system directories when loading libraries.
A user is affected if Azure Monitor Agent version 1.42.0 or higher is NOT installed, OR if unprivileged users can modify directories in the agent's library/executable search path.
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 data1.42.0
Update Azure Monitor Agent to the latest patched version. Review and secure directory permissions to prevent unauthorized modification of search path locations.
- 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-2026-42830 — 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-2026-42830 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
- No spam, self-promotion, credentials, or personal data