CVE-2017-18691

Memory corruption via unchecked TSP sysfs copies

Published Apr 7, 2020 · Updated Aug 5, 2024

Buffer overflows in TSP sysfs cmd_store on Samsung Android 6.0 and 7.0 Exynos8890 devices allow local users to corrupt memory. The handler copies source data without confirming that source and destination sizes remain within buffer boundaries. Access is restricted by Linux file permissions; Samsung describes memory corruption but does not publish a resulting crash, code execution, or data-access impact.

CVSS severity9.8
Critical
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflows in TSP sysfs cmd_store on Samsung Android 6.0 and 7.0 Exynos8890 devices allow local users to corrupt memory. The handler copies source data without confirming that source and destination sizes remain within buffer boundaries. Access is restricted by Linux file permissions; Samsung describes memory corruption but does not publish a resulting crash, code execution, or data-access impact.

The record

CVE
CVE-2017-18691
Published
Apr 7, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-120
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Apr 7, 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

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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