CVE-2026-27755
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 · uneditedSODOLA SL902-SWTGW124AS firmware versions through 200.1.20 contain a weak session identifier generation vulnerability that allows attackers to forge authenticated sessions by computing predictable MD5-based cookies. Attackers who know or guess valid credentials can calculate the session identifier offline and bypass authentication without completing the login flow, gaining unauthorized access to the 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 confidenceThe SODOLA SL902-SWTGW124AS firmware uses predictable MD5-hashed session cookies that can be computed offline, allowing authentication bypass without completing the login flow. An attacker with valid credentials (or who guesses them) can compute the session identifier and impersonate any user.
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<= 200.1.20CVSS 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
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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 device firmware versionAccess the device's web administration interface and navigate to the Status, System Info, or About page to view the firmware version. Alternatively, check the HTTP response headers or the login page source for version information.Affected if The firmware version displayed is 200.1.20 or lower (e.g., 200.1.20, 200.1.15, etc.)
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Verify the web management interface is enabledAttempt to access the device's IP address over HTTP/HTTPS on common web ports (80, 443, 8080). Confirm the SODOLA SL902-SWTGW124AS login page loads.Affected if The web interface is accessible and displays a login page for the SL902-SWTGW124AS device
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Inspect session cookie structure after loginLog into the device with valid credentials, then use browser developer tools or a proxy to capture the session cookie set by the server. Look for a cookie named something like PHPSESSID, JSESSIONID, or a custom session identifier.Affected if The session cookie value appears short, lacks random complexity, or exhibits a pattern consistent with MD5 hashing (32-character hexadecimal string)
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Check for default or weak credentials in useReview device configuration or attempt login with common default credentials for this device model (check vendor documentation for defaults). Also verify if password complexity requirements are enforced.Affected if Default credentials are still active or the device allows simple/weak passwords that could be guessed for offline session cookie computation
You are affected if the device runs SODOLA SL902-SWTGW124AS firmware at version 200.1.20 or lower and exposes a web management interface where session cookies can be captured and analyzed for predictable MD5-based generation.
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 dataSince firmware update availability is uncertain, implement compensating controls: place devices behind a VPN or IP whitelist, enforce network segmentation, and monitor for unauthorized session activity. If vendor firmware with fixed session management is available, prioritize updating all affected devices.
- Consultation6.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA3.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2026-27755 — 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-2026-27755 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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