How severe is CVE-2022-36947?

CVE-2022-36947 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-36947 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-36947?

CVE-2022-36947 affects Faststone Image Viewer. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-36947?

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

When was CVE-2022-36947 published?

CVE-2022-36947 was published on 2022-08-18 and last updated on 2026-06-17.

CVE-2022-36947

CVE-2022-36947 is a critical-severity vulnerability in Faststone Image Viewer with a CVSS 3.x base score of 9.8. 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-787.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Faststone Image Viewer
Published: 2022-08-18
Last modified: 2026-06-17

Description

Unsafe Parsing of a PNG tRNS chunk in FastStone Image Viewer through 7.5 results in a stack buffer overflow.

Frequently asked questions

What is CVE-2022-36947?: Unsafe Parsing of a PNG tRNS chunk in FastStone Image Viewer through 7.5 results in a stack buffer overflow.
How severe is CVE-2022-36947?: CVE-2022-36947 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-36947 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-36947?: CVE-2022-36947 affects Faststone Image Viewer. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-36947?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2022-36947 published?: CVE-2022-36947 was published on 2022-08-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:faststone:image_viewer:*:*:*:*:*:*:*:*

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