CVE-2025-63929: iec104 Null Dereference — Exploit

Description

A null pointer dereference vulnerability exists in airpig2011 IEC104 thru Commit be6d841 (2019-07-08). When multiple threads enqueue elements concurrently via IEC10X_PrioEnQueue, the function may dereference a null or freed queue pointer, resulting in a segmentation fault and potential denial-of-service.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-476 CWE-476

Affected Products

Vendor	Product	Versions
airpig2011	iec104	< 2019-07-08

References

Exploits

https://github.com/airpig2011/IEC104/issues/21 https://songsong.host/mybugs/CVE-2025-63929.html

Frequently Asked Questions

What is CVE-2025-63929? +

A null pointer dereference vulnerability exists in airpig2011 IEC104 thru Commit be6d841 (2019-07-08). When multiple threads enqueue elements concurrently via IEC10X_PrioEnQueue, the function may dereference a null or freed queue pointer, resulting in a segmentation fault and potential denial-of-service. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-63929? +

CVE-2025-63929 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-63929? +

CVE-2025-63929 affects products from airpig2011, specifically: iec104. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-63929? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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