Heap-based buffer overflow in ColdFusion - CVE-2026-48440
Published: August 11, 2026
Vulnerability identifier: #VU141434
CSH Severity: High
CVSS v4: 9.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-48440
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to heap-based buffer overflow in ColdFusion when parsing input. A remote attacker can send a specially crafted request to execute arbitrary code.
Affected software
ColdFusion
How to mitigate CVE-2026-48440
Install security update from vendor's website.
ColdFusion - addressed in versions 2023 Update 23, 2025 Update 12