How severe is CVE-2018-18447?

CVE-2018-18447 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-2018-18447 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-2018-18447?

CVE-2018-18447 affects Dotpdn Paint.net. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-18447?

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-2018-18447 published?

CVE-2018-18447 was published on 2022-10-12 and last updated on 2026-06-17.

CVE-2018-18447

CVE-2018-18447 is a critical-severity vulnerability in Dotpdn Paint.net 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-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Dotpdn Paint.net
Published: 2022-10-12
Last modified: 2026-06-17

Description

dotPDN Paint.NET before 4.1.2 allows Deserialization of Untrusted Data (issue 2 of 2).

Frequently asked questions

What is CVE-2018-18447?: dotPDN Paint.NET before 4.1.2 allows Deserialization of Untrusted Data (issue 2 of 2).
How severe is CVE-2018-18447?: CVE-2018-18447 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-2018-18447 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-2018-18447?: CVE-2018-18447 affects Dotpdn Paint.net. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-18447?: 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-2018-18447 published?: CVE-2018-18447 was published on 2022-10-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:dotpdn:paint.net:*:*:*:*:*:*:*:*

More vulnerabilities in Dotpdn Paint.net

CVE-2018-18446 — Critical (CVSS 9.8): dotPDN Paint.NET before 4.1.2 allows Deserialization of Untrusted Data (issue 1 of 2).

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