CVE-2023-0355
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 · uneditedAkuvox E11 uses a hard-coded cryptographic key, which could allow an attacker to decrypt sensitive information.
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 Akuvox E11 device contains a hard-coded cryptographic key embedded in its firmware. An attacker who obtains this key through reverse engineering or firmware analysis can decrypt sensitive information that was protected using this key. This is a critical design flaw in key management.
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 dataall versionsCVSS 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.
-
Identify the device modelAccess the device web interface or check physical device labeling to confirm the model is Akuvox E11Affected if The device is an Akuvox E11 unit
-
Check firmware versionLog into the device admin panel or use the device's API to retrieve the firmware version informationAffected if Any firmware version is present (all versions are affected)
-
Obtain firmware for analysisDownload the firmware file from the vendor's support site or extract it from the device using manufacturer-provided toolsAffected if Firmware file is available for inspection
-
Search firmware for cryptographic key materialUsebinwalk, strings, or hex editor tools to extract and examine firmware contents. Look for hardcoded cryptographic keys, specifically 128-bit or 256-bit keys in plaintext or base64-encoded format embedded in binary filesAffected if A hardcoded symmetric encryption key is found embedded in the firmware binary
-
Check for encrypted sensitive dataReview any network traffic captures, stored configuration files, or backup files that may contain data encrypted using the firmware's built-in encryptionAffected if Sensitive data was encrypted using the firmware's embedded key
The environment is affected if any Akuvox E11 device is present, since all firmware versions contain the hard-coded cryptographic key that could protect sensitive data.
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 dataReplace the hard-coded key with a properly managed cryptographic key using secure key generation, storage, and rotation mechanisms. Update firmware across all affected devices and re-encrypt any sensitive data that was protected with the compromised key.
- Consultation8.0 h
- Implementation16.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $10,240.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-0355 — 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-2023-0355 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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