How severe is CVE-2021-44479?

CVE-2021-44479 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability low.

Is CVE-2021-44479 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-44479?

CVE-2021-44479 affects Nxp Kinetis K82 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-44479?

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

When was CVE-2021-44479 published?

CVE-2021-44479 was published on 2021-12-01 and last updated on 2026-06-17.

CVE-2021-44479

CVE-2021-44479 is a medium-severity vulnerability in Nxp Kinetis K82 Firmware with a CVSS 3.x base score of 6.1. 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-125.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 2.1
EPSS exploit prediction: 0% (18th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-125
Affected product: Nxp Kinetis K82 Firmware
Published: 2021-12-01
Last modified: 2026-06-17

Description

NXP Kinetis K82 devices have a buffer over-read via a crafted wlength value in a GET Status-Other request during use of USB In-System Programming (ISP) mode. This discloses protected flash memory.

Frequently asked questions

What is CVE-2021-44479?: NXP Kinetis K82 devices have a buffer over-read via a crafted wlength value in a GET Status-Other request during use of USB In-System Programming (ISP) mode. This discloses protected flash memory.
How severe is CVE-2021-44479?: CVE-2021-44479 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability low.
Is CVE-2021-44479 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-44479?: CVE-2021-44479 affects Nxp Kinetis K82 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-44479?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-44479 published?: CVE-2021-44479 was published on 2021-12-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:nxp:kinetis_k82_firmware:-:*:*:*:*:*:*:*

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