CVE-2026-12350
Ibm Mq Operator: unsafe deserialisation can lead to denial of service
- Risk score
- 42/100
- CVSS
- 6.5 v3.1
- Exploit chance (30 days)
- 0.3%
- Published
- 19 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- IBM MQ could allow an authenticated attacker to cause a denial of service by sending a specially crafted asynchronous consume request that crashes the queue manager agent process.
- Affected
- Ibm Mq Operator
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Story map
At a glance
Ibm Mq Operator: Amber, patch this week. IBM MQ has a stack buffer overflow vulnerability when processing TLS certificates with malformed distinguished names, allowing a remote attacker to execute arbitrary code.
The flaws
- CVE-2026-12350: Unsafe deserialisation can lead to denial of service (CVSS 6.5 · EPSS 0%)
- CVE-2026-12665: Stack buffer overflow can lead to remote code execution (CVSS 9.8 · EPSS 0%)
- CVE-2026-10572: Heap buffer overflow can lead to remote code execution (CVSS 8.8 · EPSS 0%)
- CVE-2026-10574: Heap buffer overflow can lead to remote code execution (CVSS 8.8 · EPSS 0%)
The fix
Fix: Check the linked advisory for details on the fix.
Who is exposed: {'product': 'IBM MQ', 'package': 'N/A', 'version': 'N/A'}
Where it stands
- No known exploitation
Connects to
- Same weakness: Unsafe deserialisation (CWE-502). 250 other warnings in 30 days
- Same product: Earlier Ibm Mq Operator warnings. 11 in the last 90 days
Why it is Yellow
- CVSS 6.5 medium
References
Original description
IBM MQ could allow an authenticated attacker to cause a denial of service by sending a specially crafted asynchronous consume request that crashes the queue manager agent process.
Last activity 19 Oct 2026. Patch Forecast updates every hour.