CVE-2021-34618

A remote denial of service (DoS) vulnerability was discovered in some Aruba Instant Access Point (IAP) products in version(s): Aruba Instant 6.4.x: 6.4.4.8-4.2.4.18 and below; Aruba Instant 6.5.x: 6.5.4.18 and below; Aruba Instant 8.3.x: 8.3.0.14 and below; Aruba Instant 8.4.x: All versions; Aruba Instant 8.5.x: 8.5.0.11 and below; Aruba Instant 8.6.x: 8.6.0.7 and below; Aruba Instant 8.7.x: 8.7.1.1 and below. Aruba has released patches for Aruba Instant that address this security vulnerability.

Published: 2021-07-19 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-34618 is rated Low Risk (39.3/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.48%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2021-34618

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.26% 0.48% +0.22%
2 2025-03-30 0.43% 0.26% -0.17%
3 2025-03-29 — 0.43% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-34618

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 3.6 [email protected]
3.3 2.0 LOW
AV:A/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:A)
Requires access to an adjacent network segment.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 6.5 2.9 [email protected]

Weakness enumeration for CVE-2021-34618

Affected software / configurations for CVE-2021-34618

Vendor Product Version Raw CPE
aruba aruba_instant >= 6.4.0, <= 6.4.4.8-4.2.4.18 cpe:2.3:h:aruba:aruba_instant:*:*:*:*:*:*:*:*
aruba aruba_instant >= 6.5.0, <= 6.5.4.18 cpe:2.3:h:aruba:aruba_instant:*:*:*:*:*:*:*:*
aruba aruba_instant >= 8.3.0, <= 8.3.0.14 cpe:2.3:h:aruba:aruba_instant:*:*:*:*:*:*:*:*
aruba aruba_instant >= 8.4.0, <= 8.5.0.11 cpe:2.3:h:aruba:aruba_instant:*:*:*:*:*:*:*:*
aruba aruba_instant >= 8.6.0, <= 8.6.0.7 cpe:2.3:h:aruba:aruba_instant:*:*:*:*:*:*:*:*
aruba aruba_instant >= 8.7.0, <= 8.7.1.1 cpe:2.3:h:aruba:aruba_instant:*:*:*:*:*:*:*:*

References for CVE-2021-34618

cvelogic Threat Intelligence