CVE-2022-27623
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 · uneditedMissing authentication for critical function vulnerability in iSCSI management functionality in Synology DiskStation Manager (DSM) before 7.1-42661 allows remote attackers to read or write arbitrary files via unspecified vectors.
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 critical authentication bypass exists in Synology DiskStation Manager's iSCSI management functionality. The vulnerability allows unauthenticated remote attackers to read or write arbitrary files on the affected system due to the lack of authentication controls on specific iSCSI management functions.
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< 7.1-42661CVSS 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
- High
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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.
-
Check DSM versionAccess the DSM control panel (Control Panel > System > General) or run command: cat /etc/VERSION in the terminalAffected if The installed version is below 7.1-42661
-
Verify iSCSI Manager is installedOpen Storage Manager in DSM and check if iSCSI section exists, or check Package Center for iSCSI Manager packageAffected if iSCSI Manager package is installed on the system
-
Confirm iSCSI service is enabledIn DSM Storage Manager > iSCSI, check if any iSCSI targets are created or the service is running; or run: ps aux | grep -i iscsiAffected if The iSCSI service is active with targets configured
-
Assess network exposureCheck DSM firewall settings (Control Panel > Security > Firewall) and verify if port 3260 (iSCSI) or DSM management ports are open to untrusted networksAffected if The iSCSI or DSM interface is accessible from external/untrusted networks without proper access controls
You are affected if your DSM version is below 7.1-42661 AND iSCSI Manager is enabled and accessible from your network.
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 · scoped7.1-42661
Upgrade Synology DSM to version 7.1-42661 or later. If immediate patching is not possible, restrict network access to the iSCSI management interface using firewall rules or disable iSCSI services if not required.
DSM 7.1-42661 or later (DSM 7.x)
- Log in to Synology DiskStation Manager as an administrator
- Navigate to Control Panel > Update & Restore (or System > Update on newer DSM versions)
- Click 'Check for Updates' or select the available update
- Confirm and apply the DSM update to version 7.1-42661 or later
- After the update completes, verify the DSM version by going to Control Panel > System > Information to confirm the version is 7.1-42661 or higher
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation1.0 h
- Testing3.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,936.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-27623 — 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-2022-27623 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
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