CVE-2021-38258: NXP MCUXpresso SDK v2.7.0 was discovered to contain a buffer overflow in the function USB_HostProcessCallback(

Routine

HIGH 7.8DOWNGRADE

CVE-2021-38258 is a high-severity flaw (CVSS 7.8) affecting mcuxpresso software development kit. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

NXP MCUXpresso SDK v2.7.0 was discovered to contain a buffer overflow in the function USB_HostProcessCallback().

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 75%)
CISA exploited list	No
Weakness	CWE-120
Published	2021-10-25
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: nxp

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

Am I affected?

Timeline

2021-10-25 22:15 UTCPublished CVE record published
2026-06-17 04:01 UTCUpdated Record last modified

nxp mcuxpresso software development kit DOWNGRADE

Affected: 2.7.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.7.0

1. Check installed version

apt-cache policy mcuxpresso-software-development-kit || rpm -q mcuxpresso-software-development-kit || mcuxpresso-software-development-kit --version

2. No fixed release: DOWNGRADE to a release before 2.7.0 (Debian / Ubuntu)

apt-cache madison mcuxpresso-software-development-kit sudo apt install mcuxpresso-software-development-kit=<VERSION_BEFORE_2.7.0> sudo apt-mark hold mcuxpresso-software-development-kit

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list mcuxpresso-software-development-kit sudo dnf downgrade mcuxpresso-software-development-kit-<VERSION_BEFORE_2.7.0> sudo dnf versionlock add mcuxpresso-software-development-kit

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2021-38258?

mcuxpresso software development kit: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-38258 being exploited?

CVE-2021-38258 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-2021-38258 affect?

CVE-2021-38258 affects mcuxpresso software development kit. Severity is high (CVSS 7.8). NXP MCUXpresso SDK v2.7.0 was discovered to contain a buffer overflow in the function USB_HostProcessCallback().

How urgent is CVE-2021-38258?

Priority 39/100. High severity; Public exploit reference

Related CVEs

CVE-2021-38260 HIGH 7.8 DOWNGRADE NXP MCUXpresso SDK v2.7.0 was discovered to contain a buffer overflow in the function USB_HostParseDeviceConfi
CVE-2021-27421 HIGH 7.3 UPGRADE NXP MCUXpresso SDK versions prior to 2.8.2 are vulnerable to integer overflow in SDK_Malloc function, which co
CVE-2019-17519 HIGH 8.8 UPGRADE The Bluetooth Low Energy implementation on NXP SDK through 2.2.1 for KW41Z devices does not properly restrict
CVE-2019-17060 MEDIUM 6.5 UPGRADE The Bluetooth Low Energy (BLE) stack implementation on the NXP KW41Z (based on the MCUXpresso SDK with Bluetoo

References

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