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10g08 0800gsm FirmwareOperating system · Binardat

CVE-2026-27520

HIGH · 7.5 CVSS v3.1 Published 2026-02-24
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges Zero-click

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
Binardat 10G08-0800GSM network switch firmware versions prior to V300SP10260209 store a user password in a client-side cookie as a Base64-encoded value accessible via the web interface. Because Base64 is reversible and provides no confidentiality, an attacker who can access the cookie value can recover the plaintext 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 · high confidence

The Binardat 10G08-0800GSM network switch firmware stores user passwords in client-side cookies as Base64-encoded values accessible via the web interface. Since Base64 is encoding rather than encryption and provides no confidentiality, an attacker who obtains the cookie value can trivially decode it to recover the plaintext password.

MitigationUpgrade firmware to version V300SP10260209 or later, which should implement proper server-side session management with secure authentication tokens instead of storing reversible password data in cookies.

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
10g08 0800gsm FirmwareOperating system
Affected:<= V300SP10260209

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
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify firmware version
    Access the switch web interface administrative panel and navigate to the System Information or About section. Look for a field displaying the firmware version number.
    Affected if The displayed firmware version is V300SP10260209 or any version number lower than this (for example, V300SP01250101).
  2. Inspect browser cookies for stored credentials
    While logged into the switch web interface, open your browser developer tools (F12), go to the Application or Storage tab, and examine all cookies set by the switch. Look for cookie names that may contain user identifiers or authentication-related data.
    Affected if Any cookie value appears to be Base64-encoded and, when decoded, matches a user password stored on the system.
  3. Check login-related cookie values
    After a successful login to the web interface, locate cookies with names like 'password', 'pwd', 'userpass', 'auth', or similar. Use a Base64 decoder to examine whether these values decode to plaintext passwords.
    Affected if A cookie contains a Base64 string that decodes to a known user password or any readable text that resembles a credential.

If the firmware version is V300SP10260209 or lower AND cookies from the web interface contain Base64-encoded values that decode to plaintext passwords, the environment is affected by this vulnerability.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Upgrade firmware to version V300SP10260209 or later, which should implement proper server-side session management with secure authentication tokens instead of storing reversible password data in cookies.

Recommended fix Moderate confidence

V300SP10260209

  1. 1. Identify the current firmware version of the Binardat 10G08-0800GSM network switch by accessing the web management interface or using CLI commands.
  2. 2. If the current firmware version is earlier than V300SP10260209, download the V300SP10260209 firmware update from the official Binardat vendor website or support channel.
  3. 3. Backup the current device configuration before performing the firmware upgrade.
  4. 4. Upload and apply the V300SP10260209 firmware update through the device's web interface or CLI, following the vendor's documented upgrade procedure.
  5. 5. After the upgrade completes, verify that the new firmware version is V300SP10260209 or later.
  6. 6. Confirm that user passwords are no longer stored in cookies as Base64-encoded values by inspecting HTTP responses and cookies in the web interface.
  7. 7. As a security best practice, change user passwords after the upgrade to ensure any previously compromised credentials are rotated.
Caveat Review vendor release notes for V300SP10260209 to check for any configuration or feature changes that may require adjustments during or after the upgrade.

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

Fix this in 10g08 0800gsm Firmware Scoped from the published advisory
  • Consultation2.0 h
  • Implementation3.0 h
  • Testing2.0 h
  • Review / QA1.0 h
8.0 hours of engineering $1,420
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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-2026-27520 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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