IBM App Connect Enterprise up to 12.0.12.27/13.0.8.0 deserialization

Summaryinfo

A vulnerability, which was classified as very critical, has been found in IBM App Connect Enterprise up to 12.0.12.27/13.0.8.0. Impacted is an unknown function. This manipulation causes deserialization. This vulnerability is registered as CVE-2026-17156. The attack needs to be launched locally. No exploit is available.

Detailsinfo

A vulnerability classified as very critical was found in IBM App Connect Enterprise up to 12.0.12.27/13.0.8.0. Affected by this vulnerability is an unknown functionality. The manipulation with an unknown input leads to a deserialization vulnerability. The CWE definition for the vulnerability is CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

IBM App Connect Enterprise 13.0.1.0 through 13.0.8.0, and 12.0.1.0 through 12.0.12.27 could allow a local attacker to execute arbitrary code due to insecure deserialization.

The advisory is shared at ibm.com. This vulnerability is known as CVE-2026-17156 since 07/24/2026. The exploitation appears to be easy. An attack has to be approached locally. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 09/14/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• IBM

Name

• App Connect Enterprise

Version

• 12.0.12.0
• 12.0.12.1
• 12.0.12.2
• 12.0.12.3
• 12.0.12.4
• 12.0.12.5
• 12.0.12.6
• 12.0.12.7
• 12.0.12.8
• 12.0.12.9
• 12.0.12.10
• 12.0.12.11
• 12.0.12.12
• 12.0.12.13
• 12.0.12.14
• 12.0.12.15
• 12.0.12.16
• 12.0.12.17
• 12.0.12.18
• 12.0.12.19
• 12.0.12.20
• 12.0.12.21
• 12.0.12.22
• 12.0.12.23
• 12.0.12.24
• 12.0.12.25
• 12.0.12.26
• 12.0.12.27
• 13.0.0
• 13.0.1
• 13.0.2
• 13.0.3
• 13.0.4
• 13.0.5
• 13.0.6
• 13.0.7
• 13.0.8.0

License

• commercial

Website

• Vendor: https://www.ibm.com/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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