CVE-2023-31195
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 · uneditedASUS Router RT-AX3000 Firmware versions prior to 3.0.0.4.388.23403 uses sensitive cookies without 'Secure' attribute. When an attacker is in a position to be able to mount a man-in-the-middle attack, and a user is tricked to log into the affected device through an unencrypted ('http') connection, the user's session may be hijacked.
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 confidenceThe ASUS RT-AX3000 router firmware prior to version 3.0.0.4.388.23403 sets sensitive session cookies without the 'Secure' attribute, allowing them to be transmitted over unencrypted HTTP connections. An attacker positioned for a man-in-the-middle attack can intercept these cookies and hijack user sessions.
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< 3.0.0.4.388.23403CVSS 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
- High
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/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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Confirm router modelLog into the router web interface or check the device label to verify the model is ASUS RT-AX3000Affected if The device is not an ASUS RT-AX3000 (different models have different firmware and may not be affected by this specific CVE)
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Check installed firmware versionAccess the router admin panel, navigate to the Firmware Version or System Information page. Compare the displayed version number to 3.0.0.4.388.23403Affected if The firmware version is lower than 3.0.0.4.388.23403 (for example, 3.0.0.4.388.xxxxx where xxxxx is less than 23403)
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Verify HTTP management is enabledIn the router admin panel, check Network Administration or System Settings to see if HTTP (instead of HTTPS) access is allowed for the web interfaceAffected if HTTP access is enabled - the vulnerability only manifests when cookies can be transmitted over unencrypted HTTP connections
You are affected if you have an ASUS RT-AX3000 router running firmware version 3.0.0.4.388.23403 or lower AND HTTP (unencrypted) management access is enabled, allowing cookies to be sent over insecure connections.
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 · scoped3.0.0.4.388.23403
Upgrade the router firmware to version 3.0.0.4.388.23403 or later. Avoid logging into the router over unencrypted HTTP connections.
ASUS RT-AX3000 Firmware 3.0.0.4.388.23403 or later
- Download firmware version 3.0.0.4.388.23403 or later from the official ASUS support website for RT-AX3000
- Access the router's web administration interface via a wired connection
- Navigate to Administration > Firmware Upgrade (or similar section)
- Upload the downloaded firmware file and initiate the upgrade
- Wait for the router to reboot and verify the new firmware version is installed
- After upgrade, ensure you access the router via HTTPS (not HTTP) to maintain session security
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation1.0 h
- Implementation2.0 h
- Testing1.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-31195 — 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-2023-31195 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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- Version or environment caveats, and links to real fixes
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