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CVE-2020-35511

HighPublished

A global buffer overflow was discovered in pngcheck function in pngcheck-2.4.0(5 patches applied) via a crafted png file.

Published: Aug 23, 2022
Updated: Aug 4, 2024
Assigning CNA: redhat
Evidence observed: Aug 8, 2026

Primary CVSS

7.8/ 10High

nvd · CVSS 3.1

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS probability estimate

0.4%

Low · next 30 days

Percentile: 29.5%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

A global buffer overflow was discovered in pngcheck function in pngcheck-2.4.0(5 patches applied) via a crafted png file.

Sources

pngcheck-vulnsPoC
A repository of proof-of-concept files demonstrating disclosed and patched vulnerabilities in pngcheck (2.4.0 - 3.0.1), including CVE-2020-27818, CVE-2020-35511 and other vulns.

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