CVE-2026-16340

CRITICAL CVSS 3.1: 9.8 EPSS 0.49%
Updated Oct 15, 2026
IBM
Parameter Value
CVSS 9.8 (CRITICAL)
Affected Versions 10.5.0.0 — 11.0.0.3
Fixed In 10.5.0.23
Type CWE-787 (Out-of-bounds Write)
Vendor IBM
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Weakness Type (CWE)

Vulnerable Products 4

Configuration From (including) Up to (excluding)
Ibm Datapower_Gateway
cpe:2.3:a:ibm:datapower_gateway:*:*:*:*:-:*:*:*
10.5.0.0 10.5.0.23
Ibm Datapower_Gateway
cpe:2.3:a:ibm:datapower_gateway:*:*:*:*:-:*:*:*
10.6.0.0 10.6.0.11
Ibm Datapower_Gateway
cpe:2.3:a:ibm:datapower_gateway:*:*:*:*:continuous_delivery:*:*:*
10.6.1.0 11.0.0.3
Ibm Datapower_Gateway
cpe:2.3:a:ibm:datapower_gateway:*:*:*:*:*:*:*:*
11.0.0.0 11.0.0.3