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Gm265dn FirmwareOperating system · Lenovo

CVE-2022-34887

MEDIUM · 5.4 CVSS v3.1 Published 2023-10-27
Fix available
A fix is available. Upgrade to 02.06.00.04.00 or later.
See remediation →
60/100
Remediation priority · Elevated
Remotely reachable Zero-click Patch available

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 · unedited
Standard users can directly operate and set printer configuration information , such as IP, in some Lenovo Printers without having to authenticate with the administrator password.

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
How this class of weakness works · CWE-287

The mechanism that verifies who a user is can be side-stepped or fooled, letting an attacker act as someone they're not. Everything built on top of that identity then becomes untrustworthy. Fixing it means hardening the full authentication flow, including edge cases, tokens, and secondary paths.

General guidance for the improper authentication class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

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
Gm265dn FirmwareOperating system
Affected:all versions
Gm266dns FirmwareOperating system
Affected:< 02.06.00.04.00
G263dns FirmwareOperating system
Affected:< 02.06.00.04.00

CVSS 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
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

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 · scoped
Upgrade available Upgrade to 02.06.00.04.00 or later
Fixed in 02.06.00.04.00
Vendor patch iknow.lenovo.com.cn →
Recommended fix Moderate confidence

For Gm266dns and G263dns: upgrade to firmware version 02.06.00.04.00 or later; For Gm265dn: contact Lenovo for the specific fixed version

  1. 1. Identify the exact model number of your Lenovo printer (Gm265dn, Gm266dns, or G263dns)
  2. 2. Determine the current firmware version installed on the printer (typically available via the printer's web interface or control panel)
  3. 3. Navigate to the Lenovo support portal or the vendor patch URL provided: https://iknow.lenovo.com.cn/detail/205041.html
  4. 4. Download the firmware update for your specific model
  5. 5. Apply the firmware update following Lenovo's documented upgrade process (usually via the printer's web management interface or a firmware update utility)
  6. 6. After updating, verify the firmware version reflects the fixed release
  7. 7. Confirm that administrator authentication is now required for configuration changes like IP settings
Caveat Firmware updates may temporarily interrupt printer availability; ensure print jobs are completed before initiating the upgrade

Generated from the published advisory — verify against the referenced sources before acting.

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $1,600. Get the upgrade done

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2022-34887 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
  • 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