CVE-2020-7506
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 · uneditedA CWE-200: Information Exposure vulnerability exists in Easergy T300, Firmware V1.5.2 and prior, which could allow an attacker to pack or unpack the archive with the firmware for the controller and modules using the usual tar archiver resulting in an information exposure.
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 Easergy T300 firmware V1.5.2 and prior contains a CWE-200 information exposure vulnerability where the firmware archive can be extracted using standard tar archiver, exposing sensitive information within the firmware files to unauthenticated attackers.
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<= 1.5.2CVSS 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 checksWork through these to decide whether this CVE applies to you.
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Identify the Easergy T300 firmware versionAccess the T300 device web interface or use SNMP/sysinfo to retrieve the current firmware version. Alternatively, if you have a firmware archive file (.tar or .bin), inspect the file metadata or extracted contents for version information.Affected if The firmware version is 1.5.2 or any earlier version (e.g., 1.5.1, 1.5.0, etc.)
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Verify the firmware archive is extractableIf you have access to the firmware archive file, attempt to extract it using standard tar command: 'tar -xvf firmware_archive.tar' or use any standard archive utility.Affected if The archive extracts successfully without requiring authentication or special decryption keys, exposing internal files such as configuration files, scripts, or credentials.
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Inspect extracted firmware contents for sensitive dataAfter extracting the firmware archive, examine the contents for plain-text credentials, API keys, hardcoded passwords, or other sensitive configuration files that should not be publicly accessible.Affected if Sensitive information such as usernames, passwords, cryptographic keys, or private certificates is found in plain text within the extracted firmware files.
The environment is affected if the Easergy T300 firmware version is 1.5.2 or lower, and the firmware archive can be extracted using standard tar utilities without authentication, exposing sensitive files.
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 dataUpgrade to a patched firmware version and ensure firmware archives are properly protected with encryption or secure packaging before distribution.
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-7506 — 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-2020-7506 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
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