CVE-2020-20663
libiec_iccp_mod v1.5 contains a heap-buffer-overflow in the component mms_client_connection.c.
libiec_iccp_mod v1.5 contains a heap-buffer-overflow in the component mms_client_connection.c.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
libiec_iccp_mod v1.5 contains a heap-buffer-overflow in the component mms_client_connection.c.
- Record
CVE-2020-20663- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:N/A:P - Weakness
- CWE-787
- Updated
- 2026-11-02
CVE List No score
libiec_iccp_mod v1.5 contains a heap-buffer-overflow in the component mms_client_connection.c.
- Record
CVE-2020-20663- Updated
- 2026-11-02
EUVDEUVD-2020-13448 No score
libiec_iccp_mod v1.5 contains a heap-buffer-overflow in the component mms_client_connection.c.
- Record
EUVD-2020-13448- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-x5gc-77qw-p999 No score
libiec_iccp_mod v1.5 contains a heap-buffer-overflow in the component mms_client_connection.c.
libiec_iccp_mod v1.5 contains a heap-buffer-overflow in the component mms_client_connection.c.
- Record
GHSA-x5gc-77qw-p999- Weakness
- CWE-787
- Updated
- 2026-11-02
OSV
libiec_iccp_mod v1.5 contains a heap-buffer-overflow in the component mms_client_connection.c.
- Record
CVE-2020-20663- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-20663 is a medium vulnerability (CVSS 6.5) in Libiec Iccp Mod Project Iccp Mod, published September 30, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.85%, the 58th percentile. No source names a fixed version.