CVE-2021-32965

Code execution via malformed XLS parsing

Published May 24, 2022 · Updated Apr 16, 2025

Type confusion in Delta Electronics DIAScreen before 1.1.0 allows remote attackers to execute arbitrary code through a crafted XLS file. The XLS parser inadequately validates user-supplied data before treating it as an incompatible type, producing memory corruption in the current process. Exploitation requires a user to visit malicious content or open the file, and resulting code runs with that user's process privileges.

CVSS severity7.8
High
EPSS probability1.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Type confusion in Delta Electronics DIAScreen before 1.1.0 allows remote attackers to execute arbitrary code through a crafted XLS file. The XLS parser inadequately validates user-supplied data before treating it as an incompatible type, producing memory corruption in the current process. Exploitation requires a user to visit malicious content or open the file, and resulting code runs with that user's process privileges.

The record

CVE
CVE-2021-32965
Published
May 24, 2022
Updated
Apr 16, 2025
Vendor
Delta Electronics, Inc.
Product
DIAScreen
Classifications
CWE-843, T1204.002, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 24, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 16, 2025Record 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=All <v1.1.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Delta Electronics, Inc. · DIAScreenversion=All <v1.1.0

Published CVSS scores

6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
7.8ICS-CERTCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-843Access of Resource Using Incompatible Type ('Type Confusion')
T1204.002Malicious File
T1203Exploitation for Client Execution

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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