How severe is CVE-2020-23561?

CVE-2020-23561 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-23561 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-23561?

CVE-2020-23561 affects Irfanview. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-23561?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-23561 published?

CVE-2020-23561 was published on 2022-07-18 and last updated on 2026-06-17.

CVE-2020-23561

CVE-2020-23561 is a medium-severity vulnerability in Irfanview with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Irfanview
Published: 2022-07-18
Last modified: 2026-06-17

Description

IrfanView 4.54 allows a user-mode write access violation starting at FORMATS!ShowPlugInSaveOptions_W+0x0000000000005722.

Frequently asked questions

What is CVE-2020-23561?: IrfanView 4.54 allows a user-mode write access violation starting at FORMATS!ShowPlugInSaveOptions_W+0x0000000000005722.
How severe is CVE-2020-23561?: CVE-2020-23561 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-23561 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-23561?: CVE-2020-23561 affects Irfanview. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-23561?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-23561 published?: CVE-2020-23561 was published on 2022-07-18 and last updated on 2026-06-17.

References

Affected products (1)

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

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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…
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