CVE-2026-12155CWE-502insecure-deserialization

CVE-2026-12155

Medium · published October 19, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
15.9
In the wild
Unconfirmed
What it is

IBM MQ could allow an authenticated attacker to cause a denial of service by sending specially crafted multicast status messages that trigger a NULL pointer dereference.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00253 · 15.9th percentile
Weakness
CWE-502 · Deserialization of Untrusted Data
Published
2026-10-19T21:17Z
Affected products (109)
ProductVersionsFixed in
ibm/supplied_mq_advanced_container_imagesall versions—
ibm/supplied_mq_advanced_container_imagesall versions—
ibm/mq_operator≥ 2.0.0, ≤ 2.0.29—
ibm/mq_operator≥ 3.2.0, ≤ 3.2.29—
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References (1)
https://www.ibm.com/support/pages/node/7292667 · [email protected]
EPSS history
Timeline
  • 21 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 19 OCT 16:40Z
    IBM MQ Deserialization of Untrusted Data
    cvelistv5
  • 19 OCT 16:40Z
    IBM MQ Deserialization of Untrusted Data
    cvelistv5