CVE-2022-23431

Code execution via RPMB global buffer overflow

Published Feb 11, 2022 · Updated Aug 3, 2024

A global buffer overflow in RPMB ldfw on Samsung Android 10 through 12 devices allows local users to write memory and execute code. RPMB ldfw performs an improper boundary check before copying attacker-controlled data into a global buffer, allowing the write to exceed its bounds. Exploitation requires local, highly privileged access on a device with a selected Exynos chipset; successful exploitation executes code in the low-level firmware context.

CVSS severity6.4
Medium
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A global buffer overflow in RPMB ldfw on Samsung Android 10 through 12 devices allows local users to write memory and execute code. RPMB ldfw performs an improper boundary check before copying attacker-controlled data into a global buffer, allowing the write to exceed its bounds. Exploitation requires local, highly privileged access on a device with a selected Exynos chipset; successful exploitation executes code in the low-level firmware context.

The record

CVE
CVE-2022-23431
Published
Feb 11, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-120, CAPEC-100
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Feb 11, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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 privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.4Samsung MobileCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
6.7NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
4.6NVDAV:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CAPEC-100Overflow Buffers

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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