CVE-2026-30007
Use-After-Free in XnSoft NConvert 7.230 via Malicious TIFF
Publication date: 2026-03-23
Last updated on: 2026-03-26
Assigner: MITRE
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| xnview | nconvert | 7.230 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-416 | The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
CVE-2026-30007 is a Use-After-Free (UAF) vulnerability in XnSoft NConvert version 7.230. It occurs when the software processes a specially crafted .tiff file, leading to invalid memory access.
This invalid memory access causes the program to crash, as confirmed by debugger logs showing an access violation in the Windows system library during heap memory operations.
How can this vulnerability impact me? :
The vulnerability can cause the NConvert application to become unstable and crash, resulting in a Denial of Service (DoS) condition.
There is no indication that this vulnerability allows remote code execution or privilege escalation, so the impact is limited to application availability.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
This vulnerability can be detected by executing the vulnerable XnSoft NConvert 7.230 application with a specially crafted malicious .tiff file and observing for a crash or access violation.
A suggested command to test for the vulnerability is:
- nconvert.exe -out tiff id_000002_00
During execution, if the Windows Debugger logs an access violation exception (code c0000005) in the ntdll.dll module within the RtlpFreeHeap function, it indicates the presence of the use-after-free vulnerability.
What immediate steps should I take to mitigate this vulnerability?
I don't know