Critical severity · published Jul 30, 2026
CVE-2026-15435
IBM App Connect Enterprise is vulnerable to arbitrary file write vulnerability
9.8
CVSS
0.7%
EPSS
No
On KEV
Description
IBM App Connect Enterprise 13.0.1.0 through 13.0.7.2, and 12.0.1.0 through 12.0.12.27 could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot" sequences (/../) to write arbitrary files on the system.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 54% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AC
App Connect Enterprise · IBM
13.0.1.0 through 13.0.7.2; 12.0.1.0 through 12.0.12.27 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-15435
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-15435
Vendor Advisory
https://www.ibm.com/support/pages/node/7281896
More from App Connect Enterprise
9.8
CVE-2026-92559
IBM App Connect Enterprise is vulnerable to a credential exposure
9.8
CVE-2026-14522
IBM App Connect Enterprise is vulnerable to an arbitrary file read and arbitrary changes to configuration settings
9.1
CVE-2024-22317
IBM App Connect Enterprise 11.0.0.1 through 11.0.0.24 and 12.0.1.0 through 12.0.11.0 could allow a remote attacker to obtain sensitive information or cause a denial of service due…
8.8
CVE-2026-75624
IBM App Connect Enterprise is vulnerable to privilege escalation and Denial of Service
8.8
CVE-2025-36361
IBM App Connect Enterprise 13.0.1.0 through 13.0.4.2, and 12.0.1.0 through 12.0.12.17 could allow an authenticated user to perform unauthorized actions on customer defined…