CVE-2020-13603

Integer Overflow in memory allocating functions

6.9 Medium

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

Attack profile

How easy it is to exploit

Attack vector: Physical
Complexity: High
Privileges needed: Low
User interaction: Required

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

0.23%Down 0.2 points since May 25, 2021

What each source reports

CVE List Score used 6.9

Integer Overflow in memory allocating functions

Record: CVE-2020-13603
CVSS 3.1: 6.9 MediumCVSS:3.1/AV:P/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
Weakness: CWE-190
Updated: 2026-11-02

EUVDEUVD-2020-5848 6.9

Record: EUVD-2020-5848
CVSS 3.1: 6.9 MediumCVSS:3.1/AV:P/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
Updated: 2026-11-03

NVD 6.9

Record: CVE-2020-13603
CVSS 3.1: 6.9 MediumCVSS:3.1/AV:P/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 4.6 MediumAV:L/AC:L/Au:N/C:P/I:P/A:P
Weakness: CWE-190
Updated: 2026-11-02

Affected products

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases, published	EUVD
Nov 2, 2026	first indexed	CVE List, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-13603 is a medium vulnerability (CVSS 6.9) in Zephyrproject Zephyr, published May 24, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.23%, the 14th percentile. No source names a fixed version.

References

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