How severe is CVE-2020-23546?

CVE-2020-23546 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-2020-23546 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-23546?

CVE-2020-23546 affects Irfanview. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-23546?

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-2020-23546 published?

CVE-2020-23546 was published on 2021-10-28 and last updated on 2026-07-09.

CVE-2020-23546

CVE-2020-23546 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% (59th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Irfanview
Published: 2021-10-28
Last modified: 2026-07-09

Description

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.

Frequently asked questions

What is CVE-2020-23546?: 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.
How severe is CVE-2020-23546?: CVE-2020-23546 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-2020-23546 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-23546?: CVE-2020-23546 affects Irfanview. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-23546?: 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-2020-23546 published?: CVE-2020-23546 was published on 2021-10-28 and last updated on 2026-07-09.

References

Affected products (1)

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

More vulnerabilities in Irfanview

CVE-2007-1867 — Critical (CVSS 10.0): Buffer overflow in IrfanView 3.99 allows remote attackers to execute arbitrary code via a crafted animated cursor (ANI)…
CVE-2008-0493 — Critical (CVSS 9.3): fpx.dll 3.9.8.0 in the FlashPix plugin for IrfanView 4.10 allows remote attackers to execute arbitrary code via a…
CVE-2007-1948 — Critical (CVSS 9.3): Buffer overflow in IrfanView 3.99 allows context-dependent attackers to cause a denial of service and possibly execute…
CVE-2020-13905 — High (CVSS 8.8): IrfanView 4.54 allows a user-mode write access violation starting at FORMATS!GetPlugInInfo+0x0000000000038ed4.
CVE-2017-2813 — High (CVSS 8.8): An exploitable integer overflow vulnerability exists in the JPEG 2000 parser functionality of IrfanView 4.44. A…
CVE-2007-2363 — High (CVSS 8.5): Buffer overflow in IrfanView 4.00 and earlier allows user-assisted remote attackers to execute arbitrary code via a…

All CVEs affecting Irfanview →