How severe is CVE-2017-7721?

CVE-2017-7721 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-2017-7721 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-7721?

CVE-2017-7721 primarily affects Irfanview. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-7721?

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-2017-7721 published?

CVE-2017-7721 was published on 2017-04-30 and last updated on 2026-06-17.

CVE-2017-7721

CVE-2017-7721 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. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 6.8
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Irfanview
Published: 2017-04-30
Last modified: 2026-06-17

Description

IrfanView version 4.44 (32bit) with FPX Plugin before 4.45 has an Access Violation and crash in processing a FlashPix (.FPX) file.

Frequently asked questions

What is CVE-2017-7721?: IrfanView version 4.44 (32bit) with FPX Plugin before 4.45 has an Access Violation and crash in processing a FlashPix (.FPX) file.
How severe is CVE-2017-7721?: CVE-2017-7721 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-2017-7721 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-7721?: CVE-2017-7721 primarily affects Irfanview. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-7721?: 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-2017-7721 published?: CVE-2017-7721 was published on 2017-04-30 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:irfanview:irfanview:4.44:*:*:*:*:*:*:*
cpe:2.3:a:irfanview:fpx:*:*:*:*:*:*:*:*

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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.
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