Integer Overflow or Wraparound Affecting clamav package, versions [,1.4.5)[1.4.0,1.5.3)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published4 Jul 2026
- disclosed1 Jul 2026
- creditUnknown
Introduced: 1 Jul 2026
CVE-2026-20244 (opens in a new tab)How to fix?
Upgrade clamav to version 1.4.5, 1.5.3 or higher.
Overview
Affected versions of this package are vulnerable to Integer Overflow or Wraparound in the DMG file parsing process due to improper boundary checks, which may result in an integer overflow on 32-bit platforms. An attacker can cause the scanning process to terminate by submitting a specially crafted DMG file for scanning. This is only exploitable if the software is running on a 32-bit platform.