CVE-2024-20821

MEDIUM

4.4

CVSS Score

Published: May 7, 2024 at 04:25 AM UTC

Updated: June 17, 2026 at 07:07 AM UTC

3 products affected across 1 vendorExynos 1380 FirmwareExynos 1330Exynos 2400

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Severity

MEDIUM4.4

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

Description

A vulnerability possible to reconfigure OTP allows local attackers to transit RMA(Return Merchandise Authorization) mode, which disables security features. This attack needs additional privilege to control TEE.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Exynos 1330 · Samsung

90%

All versions

Exynos 1380 Firmware · Samsung

90%

1380

Exynos 2400 · Samsung

90%

All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: [email protected]

https://security.samsungmobile.com/serviceWeb.smsb?year=2024&month=05

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.4MEDIUMSamsungMobile

Attack Vector: LOCAL
Complexity: LOW
Privileges: HIGH
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: HIGH
Availability: NONE

Vector?

Quick Info

StatusDEFERRED

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