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CVE Record

CVE-2020-23546: IrfanView 4.54 allows attackers to cause a denial of service or possibly other unspecified impacts via a cr...

IrfanView 4.54 allows attackers to cause a denial of service or possibly other unspecified impacts via a crafted XBM file, related to a "Data from Faulting Address is used as one or more arguments in a subsequent Function Call starting at FORMATS!ReadMosaic+0x0000000000000981.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2020-23546 concerns IrfanView 4.54 crashing, or possibly having other unspecified impact, when processing a crafted XBM image file. The public record does not provide CVSS scoring, confirmed exploitation, or a named patch. Business urgency depends on whether IrfanView opens untrusted images in user or automated workflows.

Executive priority

Assign a measured triage priority. This is not currently supported as actively exploited, but it can affect user workstations handling untrusted images. Escalate if IrfanView is part of automated processing, evidence intake, or high-volume external file review.

Technical view

The CVE description ties the issue to crafted XBM parsing and a faulting address later used in a function call inside FORMATS!ReadMosaic. Public metadata does not identify a CWE, CPE, full affected range, or fixed version. The described impact is denial of service with possible unspecified additional effects.

Likely exposure

Exposure is likely limited to systems running IrfanView 4.54, especially where users or workflows open externally supplied XBM image files. The source metadata lists affected vendor/product as n/a, so confirm locally rather than relying on CPE matching.

Exploitation context

The bundle does not show CISA KEV listing or other evidence of active exploitation. The public description indicates a crafted file trigger, meaning practical risk is most relevant where untrusted images can reach IrfanView.

Researcher notes

Evidence is thin: no CVSS, CWE, CPE, fixed version, or vendor advisory details are included. The main technical clue is the FORMATS!ReadMosaic crash path. Avoid assuming memory-corruption exploitability beyond the CVE’s “possibly other unspecified impacts” wording.

Mitigation direction

  • Inventory systems for IrfanView 4.54 and installed IrfanView plugins.
  • Check IrfanView vendor guidance for current versions, plugin updates, or advisories.
  • Limit opening XBM files from untrusted sources until status is confirmed.
  • Avoid using IrfanView 4.54 in automated processing of externally supplied images.
  • Monitor vendor and CVE records for fixed-version clarification.

Validation and detection

  • Confirm whether IrfanView 4.54 is installed on endpoints or image-review workstations.
  • Check whether the FORMATS plugin or XBM handling is present and used.
  • Review file associations and workflows that route XBM files into IrfanView.
  • Look for crash telemetry referencing FORMATS!ReadMosaic or IrfanView image parsing.
  • Document any compensating controls for externally supplied image files.
Prepared
Confidence
medium
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2020-23546 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
3Timeline events
1ADP providers
3Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CVECVE Program Container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.