What is CVE-2020-13467?

CVE-2020-13467 is a medium-severity vulnerability in Cksic Cks32f103, classified under Improper Handling of Exceptional Conditions. CVSS score: 4.6/10. Published 2020-08-31.

How severe is CVE-2020-13467?

Medium severity. CVSS v3 base score is 4.6 out of 10.

Vulnerability in Cksic Cks32f103

CVE-2020-13467

The flash memory readout protection in China Key Systems & Integrated Circuit CKS32F103 devices allows physical attackers to extract firmware via the debug interface and exception handling.

Published 2020-08-31 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.003 (20.2th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 20.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-755 — Improper Handling of Exceptional Conditions

References

www.usenix.org/system/files/woot20-paper-obermaier.pdf (Third Party Advisory)

Frequently asked questions

What is CVE-2020-13467?: CVE-2020-13467 is a medium-severity vulnerability in Cksic Cks32f103, classified under Improper Handling of Exceptional Conditions. CVSS score: 4.6/10. Published 2020-08-31.
How severe is CVE-2020-13467?: Medium severity. CVSS v3 base score is 4.6 out of 10.