CVE-2022-48196
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 · uneditedCertain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker. This affects RAX40 before 1.0.2.60, RAX35 before 1.0.2.60, R6400v2 before 1.0.4.122, R6700v3 before 1.0.4.122, R6900P before 1.3.3.152, R7000P before 1.3.3.152, R7000 before 1.0.11.136, R7960P before 1.4.4.94, and R8000P before 1.4.4.94.
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 analysisA fixed-size buffer is filled without checking the length of the incoming data, so it overflows into neighbouring memory. This is the classic overflow attackers use to overwrite return addresses and hijack execution. The fix is strict length checks and safe, bounded string and memory functions.
General guidance for the classic buffer overflow class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →
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< 1.0.2.60< 1.0.2.60< 1.0.4.122< 1.0.4.122< 1.3.3.152< 1.3.3.152< 1.0.11.136< 1.4.4.94CVSS 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
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 · scoped1.0.2.601.0.4.1221.0.11.136
Model-specific firmware: RAX40/RAX35 to 1.0.2.60+, R6400v2/R6700v3 to 1.0.4.122+, R6900P/R7000P to 1.3.3.152+, R7000 to 1.0.11.136+, R7960P/R8000P to 1.4.4.94+
- 1. Identify your NETGEAR router model from the affected list (RAX40, RAX35, R6400v2, R6700v3, R6900P, R7000P, R7000, R7960P, or R8000P)
- 2. Visit the official NETGEAR support website at https://www.netgear.com/support/
- 3. Enter your router model number in the search or support lookup
- 4. Navigate to the Firmware Updates section for your specific model
- 5. Download the firmware version equal to or newer than the fixed version for your model: RAX40/RAX35 = 1.0.2.60, R6400v2/R6700v3 = 1.0.4.122, R6900P/R7000P = 1.3.3.152, R7000 = 1.0.11.136, R7960P/R8000P = 1.4.4.94
- 6. Access your router's web management interface (typically at 192.168.1.1 or routerlogin.net)
- 7. Go to the Administration or Settings section, then select Router Update or Firmware Update
- 8. Upload the downloaded firmware file and allow the upgrade process to complete (do not power off the router)
Generated from the published advisory — verify against the referenced sources before acting.
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Free · runs locallyCheck whether your project pulls in CVE-2022-48196 — 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-2022-48196 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
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- Version or environment caveats, and links to real fixes
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