How severe is CVE-2020-23549?

CVE-2020-23549 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-23549 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-23549?

CVE-2020-23549 affects Irfanview. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-23549?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-23549 published?

CVE-2020-23549 was published on 2021-10-28 and last updated on 2026-06-17.

CVE-2020-23549

CVE-2020-23549 is a high-severity vulnerability in Irfanview with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 6.8
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Irfanview
Published: 2021-10-28
Last modified: 2026-06-17

Description

IrfanView 4.54 allows attackers to cause a denial of service or possibly other unspecified impacts via a crafted .cr2 file, related to a "Data from Faulting Address controls Branch Selection starting at FORMATS!GetPlugInInfo+0x00000000000047f6".

Frequently asked questions

What is CVE-2020-23549?: IrfanView 4.54 allows attackers to cause a denial of service or possibly other unspecified impacts via a crafted .cr2 file, related to a "Data from Faulting Address controls Branch Selection starting at FORMATS!GetPlugInInfo+0x00000000000047f6".
How severe is CVE-2020-23549?: CVE-2020-23549 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-23549 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-23549?: CVE-2020-23549 affects Irfanview. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-23549?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-23549 published?: CVE-2020-23549 was published on 2021-10-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:irfanview:irfanview:4.54:*:*:*:*:*:x86:*

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