Adobe ColdFusion buffer overflow

Summaryinfo

A vulnerability has been found in Adobe ColdFusion and classified as very critical. Affected by this issue is some unknown functionality. Performing a manipulation results in buffer overflow. This vulnerability is reported as CVE-2026-48440. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as very critical, was found in Adobe ColdFusion (the affected version unknown). This affects an unknown part. The manipulation with an unknown input leads to a buffer overflow vulnerability. CWE is classifying the issue as CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

ColdFusion is affected by a Heap-based Buffer Overflow vulnerability that could result in arbitrary code execution in the context of the current user. Exploit depends on conditions beyond the attacker's control. Exploitation of this issue does not require user interaction.

It is possible to read the advisory at helpx.adobe.com. This vulnerability is uniquely identified as CVE-2026-48440 since 05/21/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 08/11/2026).

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

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Productinfo

Type

• Programming Language Software

Vendor

• Adobe

Name

• ColdFusion

License

• commercial

Website

• Vendor: https://www.adobe.com/

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