CVE-2021-37726
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 remote buffer overflow vulnerability was discovered in HPE Aruba Instant (IAP) version(s): Aruba Instant 8.7.x.x: 8.7.0.0 through 8.7.1.2. Aruba has released patches for Aruba Instant (IAP) that address this security vulnerability.
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 confidenceA remote buffer overflow vulnerability exists in HPE Aruba Instant (IAP) devices running versions 8.7.0.0 through 8.7.1.2. The vulnerability allows remote attackers to execute arbitrary code or cause denial of service via crafted network packets, due to insufficient bounds checking in the affected Instant software components.
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>= 8.7.0.0, < 8.7.1.3< 8.7.1.3CVSS 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
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 device modelDetermine if the device is an Aruba Instant IAP (Access Point) or Siemens Scalance W1750d controller. Check the physical device label, web management interface, or CLI output for model identification.Affected if Device is an Aruba Instant IAP or Siemens Scalance W1750d
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Retrieve firmware versionAccess the device CLI or web UI and retrieve the current firmware version. In Aruba Instant CLI, this is typically shown via 'show version' or 'show inventory' commands. In the web UI, check the Dashboard or About page.Affected if Version cannot be determined or device does not support version reporting
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Compare against affected version rangeCompare the installed firmware version against the affected range: >= 8.7.0.0 and < 8.7.1.3. Note that version 8.7.1.3 and later are not affected.Affected if Installed version is 8.7.0.0 through 8.7.1.2 inclusive
The environment is affected if the device is an Aruba Instant IAP or Siemens Scalance W1750d running firmware version 8.7.0.0 through 8.7.1.2.
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.
dbcve · scoped8.7.1.3
Apply the patches released by Aruba for Instant version 8.7.x to address this vulnerability. Organizations should identify affected IAP devices, obtain the corrected firmware from Aruba support, and deploy the update following Aruba's upgrade procedures.
Aruba Instant 8.7.1.3 or later
- Identify all Aruba Instant (IAP) deployments in the environment
- Determine the current software version of each affected device
- For devices running versions 8.7.0.0 through 8.7.1.2, download version 8.7.1.3 or later from the Aruba support portal
- Upgrade each affected Aruba Instant device to version 8.7.1.3 or later following Aruba's standard upgrade procedures
- Verify the upgrade was successful by confirming the running version is 8.7.1.3 or higher
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-37726 — 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-2021-37726 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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