How severe is CVE-2020-13463?

CVE-2020-13463 has a CVSS 3.x base score of 4.6, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2020-13463 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-13463?

CVE-2020-13463 affects Apexmic Apm32f103 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-13463?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-13463 published?

CVE-2020-13463 was published on 2020-08-31 and last updated on 2026-06-17.

CVE-2020-13463

CVE-2020-13463 is a medium-severity vulnerability in Apexmic Apm32f103 Firmware with a CVSS 3.x base score of 4.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-755.

Key facts

Severity: Medium (CVSS 3.x base score 4.6)
CVSS v2: 2.1
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-755
Affected product: Apexmic Apm32f103 Firmware
Published: 2020-08-31
Last modified: 2026-06-17

Description

The flash memory readout protection in Apex Microelectronics APM32F103 devices allows physical attackers to extract firmware via the debug interface and exception handling.

Frequently asked questions

What is CVE-2020-13463?: The flash memory readout protection in Apex Microelectronics APM32F103 devices allows physical attackers to extract firmware via the debug interface and exception handling.
How severe is CVE-2020-13463?: CVE-2020-13463 has a CVSS 3.x base score of 4.6, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2020-13463 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-13463?: CVE-2020-13463 affects Apexmic Apm32f103 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-13463?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-13463 published?: CVE-2020-13463 was published on 2020-08-31 and last updated on 2026-06-17.

References

https://www.usenix.org/system/files/woot20-paper-obermaier.pdf

Affected products (1)

cpe:2.3:o:apexmic:apm32f103_firmware:-:*:*:*:*:*:*:*

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