CVE-2024-20844

Local code execution via unchecked codeword parsing

Published Apr 2, 2024 · Updated Aug 1, 2024

Out-of-bounds write in libsavsac.so in Samsung Mobile Devices before SMR Apr-2024 Release 1 allows local users to execute arbitrary code. The remaining-codeword parser omits a required boundary check and writes beyond its intended buffer. Local access is required; successful exploitation runs attacker-controlled code with the vulnerable process's privileges.

CVSS severity8.4
High
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in libsavsac.so in Samsung Mobile Devices before SMR Apr-2024 Release 1 allows local users to execute arbitrary code. The remaining-codeword parser omits a required boundary check and writes beyond its intended buffer. Local access is required; successful exploitation runs attacker-controlled code with the vulnerable process's privileges.

The record

CVE
CVE-2024-20844
Published
Apr 2, 2024
Updated
Aug 1, 2024
Vendor
Samsung Electronics Co., Ltd.
Product
Samsung Mobile Devices
Classifications
CWE-787, T1477
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 2, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Android 12 <SMR Apr-2024 Release

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Samsung Electronics Co., Ltd. · Samsung Mobile Devicesversion=Android 12 <SMR Apr-2024 Release

Published CVSS scores

7.8NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.4Samsung MobileCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1477Exploitation for Client Execution

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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