CVE-2018-21076

KASLR offset disclosure via modified trustlet

Published Apr 8, 2020 · Updated Aug 5, 2024

Information disclosure in Samsung Secure Driver on Android 7.x Exynos 8890/8895 devices allows local users to obtain a KASLR offset. The driver exposes the address-space randomization offset when it processes a modified trustlet, but Samsung has not published the faulty operation. Low-privilege local access is required; the disclosure weakens kernel address randomization without directly changing data or interrupting the device.

CVSS severity5.5
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Samsung Secure Driver on Android 7.x Exynos 8890/8895 devices allows local users to obtain a KASLR offset. The driver exposes the address-space randomization offset when it processes a modified trustlet, but Samsung has not published the faulty operation. Low-privilege local access is required; the disclosure weakens kernel address randomization without directly changing data or interrupting the device.

The record

CVE
CVE-2018-21076
Published
Apr 8, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-200
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Apr 8, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

2.1NIST NVDAV:L/AC:L/Au:N/C:P/I:N/A:N
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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