CVE-2021-37726
No exploitation reported by the sources we read.
- Published2021-10-12
- Fixed in8.7.1.3
- WeaknessCWE-120
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
A 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.
Timeline
dates in UTC- 2021-10-1215:15CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-37726?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-37726?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 8.7 | ≥ 8.7.0.0, < 8.7.1.3 | 8.7.1.3 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 8.7 | < 8.7.1.3 | 8.7.1.3 | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Distribution builds and vendor advisories
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Vendor advisories
Siemens SCALANCE W1750D
SCALANCE W1750D
Fix
- Update Arubanetworks aruba instant to 8.7.1.3
- Vendor fix CISA ICSA-21-315-06 · 1 productUpdate to V8.7.1.3 or later version
- Workaround from the vendor CISA ICSA-21-315-06 · 1 productBlock access to the Aruba Instant Command Line Interface from all untrusted users
- Workaround from the vendor CISA ICSA-21-315-06 · 1 productBlock access to the Aruba Instant web-based management interface from all untrusted users
- Workaround from the vendor CISA ICSA-21-315-06 · 1 productEnabling the Enhanced PAPI Security feature where available will prevent exploitation of these vulnerabilities. Please contact TAC for assistance if needed
- Workaround from the vendor CISA ICSA-21-315-06 · 1 productBlock access for Aruba Instant device on port UDP/8211 from all untrusted users
Advisories and patches
- www.arubanetworks.comVendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
- NVDCVSS 3.19.8read 2026-10-23
- NVDCVSS 2.010read 2026-10-23
- NVDweakness (CWE)CWE-120read 2026-10-23
- FIRST EPSSEPSS score2.4 %2026-10-22
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- 2021-10-12
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2021-37726?
Is CVE-2021-37726 actively exploited?
What is the CVSS score for CVE-2021-37726?
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.