No exploitation reportedFix available

CVE-2019-5319

Q: Is CVE-2019-5319 actively exploited?

Active exploitation of CVE-2019-5319 has not been confirmed. Its EPSS score was 2.7% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2019-5319?

CVE-2019-5319 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2021-03-30
Fixed in8.6.0.3 · 8.5.0.7 · 8.3.0.13 · 6.5.4.17
WeaknessCWE-120

Am I 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 some Aruba Instant Access Point (IAP) products in version(s): Aruba Instant 6.4.x: 6.4.4.8-4.2.4.17 and below; Aruba Instant 6.5.x: 6.5.4.16 and below; Aruba Instant 8.3.x: 8.3.0.12 and below; Aruba Instant 8.5.x: 8.5.0.6 and below; Aruba Instant 8.6.x: 8.6.0.2 and below. Aruba has released patches for Aruba Instant that address this security vulnerability.

Timeline

dates in UTC

2021-03-3002:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2019-5319?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-5319?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Arubanetworks instant

Branch	Affected	Fixed in	Source
8.6	≥ 8.6.0.0, < 8.6.0.3	8.6.0.3	NVD
8.5	≥ 8.5.0.0, < 8.5.0.7	8.5.0.7	NVD
8.3	≥ 8.3.0.0, < 8.3.0.13	8.3.0.13	NVD
6.5	≥ 6.5.0.0, < 6.5.4.17	6.5.4.17	NVD
6.4	≥ 6.4.0.0, ≤ 6.4.4.8-4.2.4.17	no fix published	NVD

Siemens scalance w1750d firmwareversion to verify

Branch	Affected	Fixed in	Source
8.7	< 8.7.0	8.7.0	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Arubanetworks instant to 8.6.0.3 · 8.5.0.7 · 8.3.0.13 · 6.5.4.17

Advisories and patches

cert-portal.siemens.comPatch
www.arubanetworks.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.19.8read 2026-10-23
NVDCVSS 2.010read 2026-10-23
NVDweakness (CWE)CWE-120read 2026-10-23
FIRST EPSSEPSS score2.7 %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: 2021-03-30
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2019-5319?

Is CVE-2019-5319 actively exploited?

Active exploitation of CVE-2019-5319 has not been confirmed. Its EPSS score was 2.7% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-5319?

CVE-2019-5319 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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