CVE-2025-52627
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 · uneditedRoot File System Not Mounted as Read-Only configuration vulnerability. This can allow unintended modifications to critical system files, potentially increasing the risk of system compromise or unauthorized changes.This issue affects AION: 2.0.
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 confidenceAION 2.0 has a configuration vulnerability where the root filesystem is mounted read-write instead of read-only. This allows unintended modification of critical system files, potentially enabling malware installation, persistence of compromises, or unauthorized system changes.
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= 2.0.0CVSS 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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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 installed Aion versionCheck if Hcltech Aion 2.0.0 is installed. Common locations: /opt/aion, /usr/local/aion, or check package manager (dpkg -l | grep aion, rpm -qa | grep aion)Affected if The system has Aion version 2.0.0 installed
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Inspect fstab root mount optionsExamine /etc/fstab and locate the entry for the root filesystem (/). Look at the mount options column (4th field) for 'rw' or 'ro'Affected if The root filesystem (/) entry shows 'rw' in the options field, indicating read-write access
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Check kernel boot parametersView /proc/cmdline to see kernel boot parameters. Look for 'ro' or 'rw' specifying root filesystem access modeAffected if The kernel boot parameters contain 'root=/dev/... rw' instead of 'root=/dev/... ro'
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Verify root filesystem is mounted read-writeRun 'mount | grep " / "' to see current mount status of root filesystem. Check the output for '(rw)' or '(ro)'Affected if The root filesystem is currently mounted with '(rw)' indicating read-write access
A system is affected if it runs Hcltech Aion 2.0.0 AND the root filesystem is mounted read-write (rw) instead of read-only (ro), as seen in fstab, kernel cmdline, or current mount status.
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 dataConfigure the system to mount the root filesystem as read-only by modifying fstab entries or kernel boot parameters (changing 'rw' to 'ro'), while ensuring a separate read-write partition exists for volatile data and system updates.
- Consultation2.0 h
- Implementation4.0 h
- Testing6.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-52627 — 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-2025-52627 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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