CVE-2021-26025

Memory corruption via unchecked BMP data copy

Published Jan 25, 2021 · Updated Aug 3, 2024

Memory corruption in ACDSee Photo Studio Professional 2021 14.0 build 1721 allows attackers to corrupt memory via a crafted BMP image. The IDE_ACDStd.apl plug-in processes image data with a rep movs copy at IDE_ACDStd!zlibVersion+0x4e5e and writes beyond the destination boundary. A user must open the file in the desktop application; the demonstrated result is an exploitable write access violation, while code execution has not been publicly demonstrated.

CVSS severity7.8
High
EPSS probability0.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in ACDSee Photo Studio Professional 2021 14.0 build 1721 allows attackers to corrupt memory via a crafted BMP image. The IDE_ACDStd.apl plug-in processes image data with a rep movs copy at IDE_ACDStd!zlibVersion+0x4e5e and writes beyond the destination boundary. A user must open the file in the desktop application; the demonstrated result is an exploitable write access violation, while code execution has not been publicly demonstrated.

The record

CVE
CVE-2021-26025
Published
Jan 25, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-863, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 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?

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

6.8NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
7.8NVDCVSS: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.

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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-863Incorrect Authorization
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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