What is the CVSS score of CVE-2025-63927?

CVE-2025-63927 has a CVSS 3.1 base score of 4.0 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L. EPSS exploitation probability: 0.0%.

Which versions of Iec104 are affected by CVE-2025-63927?

CVE-2025-63927 presents moderate security risk, a heap-based buffer overflow vulnerability rated CVSS 4.0. Exploitation could cause memory corruption or application crashes.

Is there a public PoC exploit available for CVE-2025-63927?

Yes, a public proof-of-concept exploit is available for CVE-2025-63927. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2025-63927?

During next maintenance window: Identify affected systems and apply vendor patches when convenient. Monitor vendor channels for patch availability.

Iec104 CVE-2025-63927

MEDIUM

Heap-based Buffer Overflow (CWE-122)

2025-11-12 cve@mitre.org

Buffer Overflow Heap Overflow Iec104

4.0

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

4.0 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:21 vuln.today

PoC Detected

Jan 14, 2026 - 19:35 vuln.today

Public exploit code

CVE Published

Nov 12, 2025 - 19:15 nvd

MEDIUM 4.0

DescriptionCVE.org

A heap-use-after-free vulnerability exists in airpig2011 IEC104 thru Commit be6d841 (2019-07-08). During multi-threaded client execution, the function Iec10x_Scheduled can access memory that has already been freed, potentially causing program crashes or undefined behavior. This may be exploited to trigger a denial-of-service or memory corruption.

AnalysisAI

A heap-use-after-free vulnerability exists in airpig2011 IEC104 thru Commit be6d841 (2019-07-08). Rated medium severity (CVSS 4.0), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-122. A heap-use-after-free vulnerability exists in airpig2011 IEC104 thru Commit be6d841 (2019-07-08). During multi-threaded client execution, the function Iec10x_Scheduled can access memory that has already been freed, potentially causing program crashes or undefined behavior. This may be exploited to trigger a denial-of-service or memory corruption. Affected products include: Airpig2011 Iec104.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.