CVE-2026-3238: Red Hat OpenShift Container Platform 4 · NULL Pointer Dereference
Affects Red Hat OpenShift Container Platform 4Source CVE Database V5
Not known to be exploited · CVSS 7.5 High.
Data as of 30 Oct 2026, 11:52 UTC
- 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:HExploitation evidence
Disclosed: evidence found.
CVE published 8 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10samba | Affected– | Fixed in– |
| Red Hat Enterprise Linux 6samba | Affected– | Fixed in– |
| Red Hat Enterprise Linux 6samba4 | Affected– | Fixed in– |
| Red Hat Enterprise Linux 7samba | Affected– | Fixed in– |
| Red Hat Enterprise Linux 8samba | Affected– | Fixed in– |
| Red Hat Enterprise Linux 9samba | Affected– | 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.