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CVE-2026-16340

IBM DataPower Gateway 10.5.0.0 through 10.5.0.22, 10.6.1 through 10.6.6, 10.6.0.0 through 10.6.0.10, and 11.0.0.0 through 11.0.0.2 could allow a remote attacker to execute arbitrary code due to an out-of-bounds write in the RFC2047 encoded-word parser.

Scores

9.8
CVSS 9.8 out of 10, critical severity.
0.5%
EPSS 0.5% chance of exploitation in the next 30 days.

The facts

Published
8 October 2026
Last changed
15 October 2026
NVD status
Analyzed
Severity
Critical, CVSS 9.8 out of 10 (version 3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
Affects
  • ibm datapower gateway
Known exploited
Not in the CISA Known Exploited Vulnerabilities catalogue in this build.
EPSS
0.5% chance of exploitation activity in the next 30 days (percentile 41).

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References