How severe is CVE-2018-11020?

CVE-2018-11020 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2018-11020 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-11020?

CVE-2018-11020 affects Amazon Fire Os. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-11020?

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

When was CVE-2018-11020 published?

CVE-2018-11020 was published on 2018-10-16 and last updated on 2026-06-17.

CVE-2018-11020

CVE-2018-11020 is a medium-severity vulnerability in Amazon Fire Os with a CVSS 3.x base score of 4.4. 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-88.

Key facts

Severity: Medium (CVSS 3.x base score 4.4)
CVSS v2: 4.9
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-88
Affected product: Amazon Fire Os
Published: 2018-10-16
Last modified: 2026-06-17

Description

kernel/omap/drivers/rpmsg/rpmsg_omx.c in the kernel component in Amazon Kindle Fire HD(3rd) Fire OS 4.5.5.3 allows attackers to inject a crafted argument via the argument of an ioctl on device file /dev/rpmsg-omx1 with the command 3221772291, and cause a kernel crash.

Frequently asked questions

What is CVE-2018-11020?: kernel/omap/drivers/rpmsg/rpmsg_omx.c in the kernel component in Amazon Kindle Fire HD(3rd) Fire OS 4.5.5.3 allows attackers to inject a crafted argument via the argument of an ioctl on device file /dev/rpmsg-omx1 with the command 3221772291, and cause a kernel crash.
How severe is CVE-2018-11020?: CVE-2018-11020 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2018-11020 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-11020?: CVE-2018-11020 affects Amazon Fire Os. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-11020?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-11020 published?: CVE-2018-11020 was published on 2018-10-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:amazon:fire_os:4.5.5.3:*:*:*:*:*:*:*

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