CVE-2021-25654

Arbitrary code execution via insecure temporary files

Published Jun 25, 2021 · Updated Aug 3, 2024

Insecure temporary files in Avaya Aura Device Services 7.0.0 through 8.1.4.0 allow local users to execute arbitrary code. The vendor maps the flaw to temporary files created with insecure permissions but does not identify the affected file or script-handling function. A local account must supply a specially crafted script; successful exploitation runs attacker-controlled code in an undisclosed service context.

CVSS severity6.2
Medium
EPSS probability0.78%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insecure temporary files in Avaya Aura Device Services 7.0.0 through 8.1.4.0 allow local users to execute arbitrary code. The vendor maps the flaw to temporary files created with insecure permissions but does not identify the affected file or script-handling function. A local account must supply a specially crafted script; successful exploitation runs attacker-controlled code in an undisclosed service context.

The record

CVE
CVE-2021-25654
Published
Jun 25, 2021
Updated
Aug 3, 2024
Vendor
Avaya
Product
Avaya Aura Device Services
Classifications
CWE-378, T1059
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 25, 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

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Is a vulnerable build present?

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

  1. Affected versionversion=7.0.0 <=8.1.4.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Avaya · Avaya Aura Device Servicesversion=7.0.0 <=8.1.4.0

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.6NIST NVDAV:L/AC:L/Au:N/C:P/I:P/A:P
6.2Avaya, Inc.CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:L

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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-378Creation of Temporary File With Insecure Permissions
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

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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