CVE-2026-16340: critical vulnerability in IBM DataPower Gateway 10.5.0
IBM DataPower Gateway Out-of-bounds Write
Published · Updated
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28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.8epss 0.5%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
IBM · DataPower Gateway 10.5.0IBM · DataPower Gateway 10.6.0IBM · DataPower Gateway 10.6CDIBM · DataPower Gateway 11.0.0Related CVEs — IBM DataPower Gateway 10.5.0
In the same product, most dangerous first.
CVE-2026-14497HIGHIBM DataPower Gateway Improper Verification of Cryptographic SignatureEPSS 0.6%CVE-2026-12733HIGHIBM DataPower Gateway affected by denial of serviceEPSS 0.5%CVE-2026-15762CRITICALIBM DataPower Gateway Out-of-bounds WriteEPSS 0.5%CVE-2026-14269CRITICALIBM DataPower Gateway Buffer OverflowEPSS 0.5%CVE-2025-36374MEDIUMIBM DataPower Gateway affected by XML external entity injectionEPSS 0.4%CVE-2026-14991CRITICALIBM DataPower Gateway Out-of-bounds WriteEPSS 0.4%