CVE-2022-33228
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 · uneditedInformation disclosure sue to buffer over-read in modem while processing ipv6 packet with hop-by-hop or destination option in header.
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 confidenceA buffer over-read vulnerability in the modem component allows an unauthenticated remote attacker to disclose sensitive memory contents by sending specially crafted IPv6 packets containing hop-by-hop or destination options in the header. This occurs during the parsing of IPv6 extension headers in the modem's network stack.
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 versionsall versionsall versionsall versionsall versionsall versionsall versionsall 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.
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Identify the modem or device modelCheck the device documentation, label, or system information to determine the exact model number (e.g., Mdm9207, Qca4004, Snapdragon Wear 1100)Affected if The model matches one of the affected products: Mdm8207, Mdm9205, Mdm9206, Mdm9207, Qca4004, Qts110, Snapdragon Wear 1100, or Snapdragon Wear 1200
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Confirm firmware vendor and lineageCheck if the device uses Qualcomm modem firmware by reviewing firmware version strings, boot logs, or modem diagnostic informationAffected if The device runs Qualcomm-based modem firmware for any of the affected chipsets
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Determine IPv6 protocol exposureReview network configuration to see if IPv6 is enabled on the modem interface, and check if the device is directly accessible via IPv6 (public IPv6 address, direct cellular connection)Affected if IPv6 is enabled and the modem interface can receive directly addressed IPv6 traffic from untrusted sources
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Assess network perimeter controlsCheck whether upstream network devices, firewalls, or gateways are filtering or blocking inbound IPv6 packets containing hop-by-hop or destination extension optionsAffected if IPv6 traffic with extension headers is permitted through to the modem without filtering
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Review modem logs for crash or memory read anomaliesExamine modem crash dumps, AT command logs, or diagnostic outputs for any unexpected buffer over-read errors or memory disclosure indicationsAffected if Any logs show symptoms of buffer over-read or unexpected memory access during IPv6 header parsing
A defender is affected if their device uses one of the listed Qualcomm modem products and has IPv6 connectivity that allows specially crafted packets with extension headers to reach the modem's network stack.
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 dataApply vendor-provided firmware patches for the affected modem devices. As an interim measure, consider filtering or blocking IPv6 packets with hop-by-hop or destination options at network perimeter devices if the modem cannot be immediately patched.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-33228 — 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-2022-33228 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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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