CVE-2021-25338 Vulnerability Analysis & Exploit Details

CVE-2021-25338
Vulnerability Scoring

4.4
/10
Medium Risk

The vulnerability CVE-2021-25338 could compromise system integrity but typically requires user interaction to be exploited.

Attack Complexity Details

  • Attack Complexity: High
    Exploits require significant effort and special conditions.
  • Attack Vector: Physical
    Physical access is required to exploit this vulnerability.
  • Privileges Required: High
    High-level privileges are required for exploitation.
  • Scope: Unchanged
    Exploit remains within the originally vulnerable component.
  • User Interaction: Required
    User interaction is necessary for successful exploitation.

CVE-2021-25338 Details

Status: Modified

Last updated: 🕠 21 Nov 2024, 05:54 UTC
Originally published on: 🕘 04 Mar 2021, 21:15 UTC

Time between publication and last update: 1357 days

CVSS Release: version 3

CVSS3 Source

mobile.security@samsung.com

CVSS3 Type

Secondary

CVSS3 Vector

CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:L

CVE-2021-25338 Vulnerability Summary

CVE-2021-25338: Improper memory access control in RKP in Samsung mobile devices prior to SMR Mar-2021 Release 1 allows an attacker, given a compromised kernel, to write certain part of RKP EL2 memory region.

Assessing the Risk of CVE-2021-25338

Access Complexity Graph

The exploitability of CVE-2021-25338 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2021-25338

The exploitability of CVE-2021-25338 is influenced by multiple factors. Security teams should analyze system configurations and apply appropriate countermeasures to mitigate threats.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2021-25338, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2021-25338, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: None
    CVE-2021-25338 has no significant impact on data confidentiality.
  • Integrity: High
    CVE-2021-25338 could allow unauthorized modifications to data, potentially affecting system reliability and trust.
  • Availability: Low
    CVE-2021-25338 may slightly degrade system performance without fully affecting service availability.

Exploit Prediction Scoring System (EPSS)

The EPSS score estimates the probability that this vulnerability will be exploited in the near future.

EPSS Score: 0.052% (probability of exploit)

EPSS Percentile: 24.0% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 76.0% of others.

CVE-2021-25338 References

External References

CWE Common Weakness Enumeration

NVD-CWE-Other

Vulnerable Configurations

  • cpe:2.3:o:google:android:10.0:*:*:*:*:*:*:*
    cpe:2.3:o:google:android:10.0:*:*:*:*:*:*:*
  • cpe:2.3:o:google:android:11.0:*:*:*:*:*:*:*
    cpe:2.3:o:google:android:11.0:*:*:*:*:*:*:*
  • cpe:2.3:h:samsung:exynos_9830:-:*:*:*:*:*:*:*
    cpe:2.3:h:samsung:exynos_9830:-:*:*:*:*:*:*:*

Protect Your Infrastructure against CVE-2021-25338: Combat Critical CVE Threats

Stay updated with real-time CVE vulnerabilities and take action to secure your systems. Enhance your cybersecurity posture with the latest threat intelligence and mitigation techniques. Develop the skills necessary to defend against CVEs and secure critical infrastructures. Join the top cybersecurity professionals safeguarding today's infrastructures.

Other 5 Recently Published CVEs Vulnerabilities

  • CVE-2025-4355 – A vulnerability was found in Tenda DAP-1520 1.10B04_BETA02. It has been classified as critical. This affects the function set_ws_action of the file...
  • CVE-2025-4354 – A vulnerability was found in Tenda DAP-1520 1.10B04_BETA02 and classified as critical. Affected by this issue is the function check_dws_cookie of t...
  • CVE-2025-4353 – A vulnerability, which was classified as critical, was found in Golden Link Secondary System up to 20250424. Affected is an unknown function of the...
  • CVE-2025-4352 – A vulnerability, which was classified as critical, has been found in Golden Link Secondary System up to 20250424. This issue affects some unknown p...
  • CVE-2025-4350 – A vulnerability classified as critical was found in D-Link DIR-600L up to 2.07B01. This vulnerability affects the function wake_on_lan. The manipul...