NULL Pointer Dereference Affecting samba package, versions [4.0.0-alpha1,4.22.10)[4.23.0-rc1,4.23.8)[4.2.4.0-rc1,4.24.3)
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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- published11 Jun 2026
- disclosed26 May 2026
- creditArad Inbar, Erez Cohen, Nir Somech, Ben Grinberg
Introduced: 26 May 2026
CVE-2026-3238 (opens in a new tab)How to fix?
Upgrade samba to version 4.22.10, 4.23.8, 4.24.3 or higher.
Overview
Affected versions of this package are vulnerable to NULL Pointer Dereference in the WINS server component. An attacker can cause the service to crash by sending specially crafted UDP packets. This is only exploitable if the wins support = yes setting is enabled in the [global] section of the configuration file.
Workaround
This vulnerability can be mitigated by disabling WINS support by removing the wins support = yes line from the configuration.