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9.8

IBM DataPower Gateway could let attackers run code

CVE-2026-16340 · published 3 days ago
Summary

Certain versions of IBM DataPower Gateway may let a remote attacker run their own software by sending specially crafted messages. This happens because the system mishandles certain encoded text. Apply the latest security updates from IBM as soon as possible to protect your gateway.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
ibm datapower gateway 10.6cd <= 10.6.6
ibm datapower gateway 10.6.0 <= 10.6.0.10
ibm datapower gateway 11.0.0 <= 11.0.0.2
ibm datapower gateway 10.5.0 <= 10.5.0.22
Original advisory text
IBM DataPower Gateway Out-of-bounds Write
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.
References
Fix within
Internet-facing 3 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically
  • Gives an attacker full control
Severity
9.8 Critical
Exploitation
<1% chance of attack within 30 days
Type
CWE-787Out-of-bounds Write
Timeline
Published8 Oct 2026
Updated10 Oct 2026
First seen8 Oct 2026
Sources
CVE-2026-16340 · NVD
CVE-2026-16340 · MITRE
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