Off-by-one Error Affecting EVerest/everest-core package, versions [,2026.02.0-rc1)
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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Test your applications- Snyk IDSNYK-UNMANAGED-EVERESTEVERESTCORE-15808857
- published29 Mar 2026
- disclosed26 Mar 2026
- creditFinder16
Introduced: 26 Mar 2026
CVE-2026-22593 (opens in a new tab)How to fix?
Upgrade EVerest/everest-core to version 2026.02.0-rc1 or higher.
Overview
Affected versions of this package are vulnerable to Off-by-one Error through improper handling of certificate filename lengths in the IsoMux process. An attacker can achieve arbitrary code execution by placing a crafted filename of length 100 in the certificate directory, which overflows the file_names[idx] buffer and corrupts the stack.