CVE-2021-38108

Memory disclosure via unchecked DOC file bounds

Published Oct 1, 2021 · Updated Aug 4, 2024

Out-of-bounds read in Word97Import200.dll in Corel WordPerfect 2020 20.0.0.200 allows attackers to disclose process memory via a crafted DOC file. During DOC decoding, an improper bounds check permits the library to read beyond the intended memory boundary when processing malformed file data. Exploitation requires a user to open the malicious document, and the reported consequence is disclosure of memory within the current user's application context.

CVSS severity5.5
Medium
EPSS probability1.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Word97Import200.dll in Corel WordPerfect 2020 20.0.0.200 allows attackers to disclose process memory via a crafted DOC file. During DOC decoding, an improper bounds check permits the library to read beyond the intended memory boundary when processing malformed file data. Exploitation requires a user to open the malicious document, and the reported consequence is disclosure of memory within the current user's application context.

The record

CVE
CVE-2021-38108
Published
Oct 1, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-125, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 1, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
4.3NIST NVDAV:N/AC:M/Au:N/C:P/I:N/A:N

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-125Out-of-bounds Read
T1204.002User Execution: Malicious File

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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