How severe is CVE-2020-13603?

CVE-2020-13603 has a CVSS 3.x base score of 6.9, rated medium severity. It is exploitable over physical access with high attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-13603 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-13603?

CVE-2020-13603 affects Zephyrproject Zephyr. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-13603?

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

When was CVE-2020-13603 published?

CVE-2020-13603 was published on 2021-05-25 and last updated on 2026-06-17.

CVE-2020-13603

CVE-2020-13603 is a medium-severity vulnerability in Zephyrproject Zephyr with a CVSS 3.x base score of 6.9. 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-190.

Key facts

Severity: Medium (CVSS 3.x base score 6.9)
CVSS v2: 4.6
EPSS exploit prediction: 0% (14th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-190
Affected product: Zephyrproject Zephyr
Published: 2021-05-25
Last modified: 2026-06-17

Description

Integer Overflow in memory allocating functions. Zephyr versions >= 1.14.2, >= 2.4.0 contain Integer Overflow or Wraparound (CWE-190). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-94vp-8gc2-rm45

Frequently asked questions

What is CVE-2020-13603?: Integer Overflow in memory allocating functions. Zephyr versions >= 1.14.2, >= 2.4.0 contain Integer Overflow or Wraparound (CWE-190). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-94vp-8gc2-rm45
How severe is CVE-2020-13603?: CVE-2020-13603 has a CVSS 3.x base score of 6.9, rated medium severity. It is exploitable over physical access with high attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-13603 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-13603?: CVE-2020-13603 affects Zephyrproject Zephyr. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-13603?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-13603 published?: CVE-2020-13603 was published on 2021-05-25 and last updated on 2026-06-17.

References

http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-94vp-8gc2-rm45

Affected products (1)

cpe:2.3:o:zephyrproject:zephyr:*:*:*:*:*:*:*:*

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