CVE-2026-16340

CRITICALCVSS 9.8/10EPSS 0.49%

Last modified

CVE-2026-16340 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 0.49% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability
0.49%

40.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
IbmDatapower Gateway>= 10.5.0.0, < 10.5.0.23
IbmDatapower Gateway>= 10.6.0.0, < 10.6.0.11
IbmDatapower Gateway>= 10.6.1.0, < 11.0.0.3
IbmDatapower Gateway>= 11.0.0.0, < 11.0.0.3

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is 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.
How severe is CVE-2026-16340?
CVE-2026-16340 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.49% probability of exploitation in the next 30 days.
How do I fix CVE-2026-16340?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST