CVE-2021-46064
HighCVSS 7.8Exploitation Probability (EPSS)
Elevated risk62th percentile - higher than 62% of all known CVEs
Summary
IrfanView 4.59 is vulnerable to a buffer overflow in the function at address 0x413c70 (in the 32-bit version). The vulnerability is triggered when the user opens a malicious TIFF image.
Risk Assessment
An attacker could exploit this vulnerability to execute arbitrary code or cause a program crash, posing a risk to the confidentiality and integrity of data on the victim's system.
Recommendation
It is recommended to immediately update IrfanView to the latest available version that includes security fixes. Also, avoid opening TIFF files from untrusted sources.
Other vulnerabilities in IrfanView
See all- CVE-2017-2813High
An exploitable integer overflow vulnerability exists in the JPEG 2000 parser functionality of IrfanView 4.44. A specially crafted jpeg2000 image can cause an integer overflow leading to wrong memory allocation resulting in arbitrary code execution.
- CVE-2020-23546High
IrfanView 4.54 contains a vulnerability that allows an attacker to cause a denial of service or possibly other unspecified impacts via a crafted XBM file. The issue is related to data from a faulting address being used as arguments in a function call in FORMATS!ReadMosaic.
Original NVD description (English source)
IrfanView 4.59 is vulnerable to buffer overflow via the function at address 0x413c70 (in 32bit version of the binary). The vulnerability triggers when the user opens malicious .tiff image.

