CVE-2026-15435IBM App Connect Enterprise is vulnerable to arbitrary file write vulnerability
- 9.8CriticalCVSS base score
- 0.73%Exploitation in 30 daysEPSS · top 45% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By ibm
- 20 days later
· 20 days later
Published
- 1 day later
· 1 day later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| ibmCNA (assigner) | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Analyzed | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.73% · top 45% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Affected products
- affected 13.0.1.0 – ≤ 13.0.7.2
- affected 12.0.1.0 – ≤ 12.0.12.27
What to do
Solution: IBM strongly recommends addressing the vulnerability/vulnerabilities now by applying the appropriate fix to IBM App Connect Enterprise Affected Product(s)Version(s)APARRemediation / FixesIBM App Connect Enterprise13.0.1.0 - 13.0.7.2IT49737 The APAR (IT49737) is available from IBM App Connect Enterprise v13- Fix Pack Release 13.0.8.0 https://www.ibm.com/support/pages/download-ibm-app-connect-enterprise-13080 IBM App Connect Enterprise12.0.1.0 - 12.0.12.27IT49737 The APAR (IT49737) is available from IBM App Connect Enterprise v12- Fix Pack Release 12.0.12.28 https://www.ibm.com/support/pages/download-ibm-app-connect-enterprise-1201228-fix-pack
References
References1
- https://www.ibm.com/support/pages/node/7281896 (opens in a new tab)vendor-advisorypatch
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-51138 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-15435)Record last updated .