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VulnerabilityPublished Updated

CVE-2026-3238: Red Hat OpenShift Container Platform 4 · NULL Pointer Dereference

Affects Red Hat OpenShift Container Platform 4Source CVE Database V5

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Not known to be exploited · CVSS 7.5 High.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
2.6% chance of exploitation in 30 days – higher than 85% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 8 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat Enterprise Linux 10sambaAffected–Fixed in–
Red Hat Enterprise Linux 6sambaAffected–Fixed in–
Red Hat Enterprise Linux 6samba4Affected–Fixed in–
Red Hat Enterprise Linux 7sambaAffected–Fixed in–
Red Hat Enterprise Linux 8sambaAffected–Fixed in–
Red Hat Enterprise Linux 9sambaAffected–Fixed in–

AI-suggested

Until a fix is available, consider disabling the WINS service if it is not required or restricting UDP access to the WINS service from untrusted networks to reduce exposure.

Description

A flaw was found in Samba’s WINS server component when running as an Active Directory Domain Controller. The WINS protocol handlers for certain request types did not properly validate incoming packets, allowing an unauthenticated remote attacker to trigger a NULL pointer dereference and crash the WINS service using specially crafted UDP packets.

References

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