Security readout for executives and security teams
Plain-English summary
CVE-2020-23565 describes arbitrary code execution in IrfanView v4.53 when processing a crafted JPEG 2000 file. The business risk is user-driven compromise through a malicious image file. The provided sources do not name active exploitation, a CVSS score, a vendor fix, or a supported mitigation.
Executive priority
Prioritize if IrfanView is present on user endpoints handling external files. The impact is potentially serious, but urgency is moderated by missing evidence of active exploitation and incomplete patch information.
Technical view
The CVE links the issue to IrfanView v4.53 JPEG 2000 handling and notes attacker-controlled faulting-address data influencing branch selection in JPEG2000!ShowPlugInSaveOptions_W. This indicates a likely memory-safety/control-flow problem, but the source bundle lacks CWE, exploitability details, patch status, and precise affected component metadata.
Likely exposure
Exposure is most likely on endpoints where IrfanView v4.53 is installed and used to open JPEG 2000 content from email, web downloads, tickets, shared drives, or external parties.
Exploitation context
The bundle includes a public GitHub research reference, but KEV is false and no cited source states active exploitation. Treat this as public technical disclosure, not confirmed in-the-wild exploitation.
Researcher notes
Do not infer broader product versions beyond IrfanView v4.53 from the provided bundle. The CVE text supports arbitrary code execution via crafted JPEG 2000 input, but not the exact root cause, reliable exploit conditions, or remediation version.
Mitigation direction
- Inventory endpoints for IrfanView v4.53 installations.
- Check IrfanView vendor guidance for fixed versions or official mitigation.
- Restrict opening JPEG 2000 files from untrusted sources.
- Remove IrfanView or JPEG 2000 handling where not business-required.
- Use endpoint controls to limit execution from risky user workstations.
Validation and detection
- Confirm whether IrfanView v4.53 exists in software inventory.
- Check file associations for JPEG 2000 formats on affected endpoints.
- Review security telemetry for suspicious launches after image-file opens.
- Verify remediation against vendor guidance before closure.
- Document any compensating controls for unmanaged systems.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
Execution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2020-23565 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/KamasuOri/publicResearch/tree/master/poc/irfanview/3CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.