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CVE-2018-11020

17
FAUCET Score

CVE-2018-11020 describes a kernel crash vulnerability in Amazon Kindle Fire HD (3rd Gen) devices running Fire OS 4.5.5.3. A highly privileged local attacker can trigger this by injecting a crafted argument into an ioctl call on the /dev/rpmsg-omx1 device file. This vulnerability has a CVSS score of 4.4 (Medium), indicating a local attack vector with low complexity, resulting in high availability impact (kernel crash) but no confidentiality or integrity impact. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
4.5.5.3CPE matchmatch criteria
cpe:2.3:o:amazon:fire_os:4.5.5.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.4MEDIUM

CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
0.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.63%
Probability of exploitation in next 30 days
EPSS Percentile
46.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0063 is in the 94th percentile among its peer group of 3,720 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / datadancer/HIAFuzz/blob/master/CVE-2018-11020.md
ExploitThird Party Advisory
github.com / datadancer/HIAFuzz/blob/master/CVE-Advisory.md
ExploitThird Party Advisory