CVE-2026-4752
Use-After-Free Vulnerability in Echo-Mate Before V
Publication date: 2026-03-24
Last updated on: 2026-05-05
Assigner: Government Technology Agency of Singapore Cyber Security Group (GovTech CSG)
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| no-chicken | echo-mate | to 250329 (exc) |
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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?
This vulnerability is a Use After Free issue found in the Echo-Mate software by No-Chicken, specifically affecting versions before V250329. A Use After Free vulnerability occurs when a program continues to use memory after it has been freed, which can lead to unpredictable behavior or security risks. In this case, the problem was in cloned functions within the Echo-Mate codebase related to the NFC subsystem, where the software improperly handled memory in the Logical Link Control Protocol local function finder.
How can this vulnerability impact me? :
This vulnerability can have serious impacts because it allows attackers or malicious processes to exploit the use-after-free condition. According to the CVSS score of 6.4, it requires local access with high complexity and privileges, but it can lead to high impact on confidentiality, integrity, and availability. This means an attacker with local access could potentially execute arbitrary code, cause crashes, or manipulate sensitive data within the Echo-Mate system, compromising its security and stability.
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?
I don't know
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, you should apply the patch that fixes the use-after-free issue in the Echo-Mate codebase. This patch corresponds to the commit `6709d4b` from the Linux kernel repository, which addresses the use-after-free in the NFC LLCP local function finder.
Specifically, update your Echo-Mate installation to a version including the fix merged on November 3, 2025 (pull request #5), which eliminates the vulnerability by preventing use-after-free errors in cloned functions within the NFC subsystem.