What’s Vulnerable › Vulnerabilities

CVE-2020-35133

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-12-16 · updated 2026-06-17
• Weakness: CWE-434

Description

irfanView 4.56 contains an error processing parsing files of type .pcx. Which leads to out-of-bounds writing at i_view32+0xdb60.

Affected products

• IrfanView: 4.56

References

• https://github.com/DmitryMeD/pentesting/blob/main/IrfanView%204.56.md
• https://twitter.com/DmitriyMelikov
• https://github.com/DmitryMeD/pentesting/blob/main/IrfanView%204.56.md
• https://twitter.com/DmitriyMelikov

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