CVE-2021-25159Public exploitNetwork attack vector

Authenticated sensitive-file overwrite via Web Interface

Published Mar 30, 2021 · Updated Aug 3, 2024

Arbitrary file write in affected Aruba Instant releases allows remote authenticated users to overwrite sensitive system files through the WebUI. The Web Interface accepts an attacker-selected file target and writes supplied content over it; HPE has not disclosed the responsible endpoint or validation failure. Administrative access to the management interface is required, and the documented consequence is modification of sensitive files without direct disclosure or service interruption.

CVSS severity4.4
Medium
EPSS probability12.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file write in affected Aruba Instant releases allows remote authenticated users to overwrite sensitive system files through the WebUI. The Web Interface accepts an attacker-selected file target and writes supplied content over it; HPE has not disclosed the responsible endpoint or validation failure. Administrative access to the management interface is required, and the documented consequence is modification of sensitive files without direct disclosure or service interruption.

The record

CVE
CVE-2021-25159
Published
Mar 30, 2021
Updated
Aug 3, 2024
Vendor
Hewlett Packard Enterprise (HPE)
Product
Aruba Instant
Classifications
T1565.001
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 30, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Aruba Instant 6.4.x: 6.4.4.8-4.2.4.17 and below
  2. Affected versionversion=Aruba Instant 6.5.x: 6.5.4.18 and below
  3. Affected versionversion=Aruba Instant 8.3.x: 8.3.0.14 and below
  4. Affected versionversion=Aruba Instant 8.5.x: 8.5.0.11 and below
  5. Affected versionversion=Aruba Instant 8.6.x: 8.6.0.7 and below
  6. Affected versionversion=Aruba Instant 8.7.x: 8.7.1.1 and below

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Hewlett Packard Enterprise (HPE) · Aruba Instantversion=Aruba Instant 6.4.x: 6.4.4.8-4.2.4.17 and below; version=Aruba Instant 6.5.x: 6.5.4.18 and below; version=Aruba Instant 8.3.x: 8.3.0.14 and below; version=Aruba Instant 8.5.x: 8.5.0.11 and below; version=Aruba Instant 8.6.x: 8.6.0.7 and below; version=Aruba Instant 8.7.x: 8.7.1.1 and below

Published CVSS scores

8.5NIST NVDAV:N/AC:L/Au:S/C:N/I:C/A:C
4.4Hewlett Packard EnterpriseCVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1565.001Stored Data Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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