CVE-2022-40981
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 · uneditedAll versions of ETIC Telecom Remote Access Server (RAS) 4.5.0 and prior is vulnerable to malicious file upload. An attacker could take advantage of this to store malicious files on the server, which could override sensitive and useful existing files on the filesystem, fill the hard disk to full capacity, or compromise the affected device or computers with administrator level privileges connected to the affected device.
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 confidenceAll versions of ETIC Telecom RAS 4.5.0 and prior contain an unauthenticated file upload vulnerability allowing attackers to upload arbitrary files to the server. This can lead to remote code execution by overwriting web server files or executable binaries, denial of service via disk exhaustion, or full device compromise with administrator 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<= 4.5.0CVSS 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
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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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Identify the ETIC Telecom RAS productLocate the device or software labeled as ETIC Telecom Remote Access Server in your asset inventory or network documentation.Affected if The device or software is identified as ETIC Telecom RAS.
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Determine the firmware versionAccess the RAS web interface or administrative console and locate the firmware version information, typically found in System Info, Status, or About pages. Alternatively, check the firmware file name or update package if you maintain local copies.Affected if The firmware version is 4.5.0 or any version prior to 4.5.0.
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Verify file upload feature accessibilityLocate the file upload functionality in the RAS web interface. Common paths include firmware update, configuration backup/restore, or user avatar upload pages. Attempt to access these endpoints without authentication if testing in an isolated environment.Affected if The file upload interface is accessible without authentication.
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Assess network exposureReview firewall rules, ACLs, or VPN configurations to determine if the RAS web interface is accessible from untrusted networks or the public internet.Affected if The RAS web interface with file upload capability is exposed to untrusted networks.
If the ETIC Telecom RAS firmware version is 4.5.0 or lower and the file upload feature is accessible, the environment is affected by CVE-2022-40981.
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 dataImmediately restrict or disable the file upload functionality until a vendor patch is available; if possible, update to a patched version. Implement strict file type validation, size limits, and store uploads outside web-accessible directories.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-40981 — 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-2022-40981 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