CVE-2020-13467: The flash memory readout protection in China Key Systems & Integrated Circuit CKS32F103 devices allows physica

Routine

MEDIUM 4.6MITIGATE

CVE-2020-13467 is a medium-severity flaw (CVSS 4.6) affecting cks32f103 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	4.6 (Medium)
Attack vector	Physical
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 78%)
CISA exploited list	No
Weakness	CWE-755
Published	2020-08-31
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: cksic

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-08-31 16:15 UTCPublished CVE record published
2026-06-17 02:53 UTCUpdated Record last modified

cksic cks32f103 firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-13467?

cks32f103 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-13467 being exploited?

CVE-2020-13467 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-13467 affect?

CVE-2020-13467 affects cks32f103 firmware. Severity is medium (CVSS 4.6). 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.

How urgent is CVE-2020-13467?

Priority 22/100. No elevated risk signals yet.

Related CVEs

CVE-2020-13464 MEDIUM 4.2 MITIGATE The flash memory readout protection in China Key Systems & Integrated Circuit CKS32F103 devices allows physica

References

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