CVE-2020-23553

Application crash via crafted DDS parsing

Published Sep 16, 2022 · Updated Aug 4, 2024

Out-of-bounds write in IrfanView 4.54 allows local users to crash the 32-bit viewer by opening a crafted DDS file. The FORMATS.dll GetPlugInInfo path executes a rep movs instruction that copies attacker-controlled DDS data through invalid destination memory. The affected path requires the FORMATS plug-in and local file opening; published evidence bounds the demonstrated consequence to a user-mode write access violation.

CVSS severity7.8
High
EPSS probability0.33%
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 write in IrfanView 4.54 allows local users to crash the 32-bit viewer by opening a crafted DDS file. The FORMATS.dll GetPlugInInfo path executes a rep movs instruction that copies attacker-controlled DDS data through invalid destination memory. The affected path requires the FORMATS plug-in and local file opening; published evidence bounds the demonstrated consequence to a user-mode write access violation.

The record

CVE
CVE-2020-23553
Published
Sep 16, 2022
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 16, 2022CVE 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 privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write

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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