CVE-2021-26363 Vulnerability Analysis & Exploit Details

CVE-2021-26363
Vulnerability Scoring

4.4
/10
Medium Risk

The vulnerability CVE-2021-26363 could compromise system integrity but typically requires user interaction to be exploited.

Attack Complexity Details

  • Attack Complexity: Low
    Exploits can be performed without significant complexity or special conditions.
  • Attack Vector: Local
    Vulnerability requires local system access.
  • Privileges Required: Low
    Some privileges are necessary to exploit the vulnerability.
  • Scope: Unchanged
    Exploit remains within the originally vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2021-26363 Details

Status: Modified

Last updated: 🕠 21 Nov 2024, 05:56 UTC
Originally published on: 🕖 12 May 2022, 19:15 UTC

Time between publication and last update: 923 days

CVSS Release: version 3

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

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

CVE-2021-26363 Vulnerability Summary

CVE-2021-26363: A malicious or compromised UApp or ABL could potentially change the value that the ASP uses for its reserved DRAM, to one outside of the fenced area, potentially leading to data exposure.

Assessing the Risk of CVE-2021-26363

Access Complexity Graph

The exploitability of CVE-2021-26363 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-2021-26363

CVE-2021-26363 presents an accessible attack vector with minimal effort required. Restricting access controls and implementing security updates are critical to reducing exploitation risks.

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-2021-26363, 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-2021-26363, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: Low
    CVE-2021-26363 could lead to minor leaks of non-critical information without major privacy breaches.
  • Integrity: Low
    Exploiting CVE-2021-26363 may cause minor changes to data without severely impacting its accuracy.
  • Availability: None
    CVE-2021-26363 does not impact system availability.

Exploit Prediction Scoring System (EPSS)

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

EPSS Score: 0.044% (probability of exploit)

EPSS Percentile: 15.45% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 84.55% of others.

CVE-2021-26363 References

External References

CWE Common Weakness Enumeration

NVD-CWE-noinfo

Vulnerable Configurations

  • cpe:2.3:a:amd:radeon_software:-:*:*:*:*:*:*:*
    cpe:2.3:a:amd:radeon_software:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_3_3100_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_3_3100_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_3_3100:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_3_3100:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_3_3300g_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_3_3300g_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_3_3300g:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_3_3300g:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_3_3300x_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_3_3300x_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_3_3300x:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_3_3300x:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_3_5400u_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_3_5400u_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_3_5400u:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_3_5400u:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_9_5900hs_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_9_5900hs_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_9_5900hs:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_9_5900hs:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_9_5900hx_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_9_5900hx_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_9_5900hx:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_9_5900hx:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_9_5980hs_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_9_5980hs_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_9_5980hs:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_9_5980hs:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_9_5980hx_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_9_5980hx_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_9_5980hx:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_9_5980hx:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_3_5125c_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_3_5125c_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_3_5125c:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_3_5125c:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_3_5425c_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_3_5425c_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_3_5425c:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_3_5425c:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_7_3700x_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_7_3700x_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_7_3700x:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_7_3700x:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_9_3900x_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_9_3900x_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_9_3900x:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_9_3900x:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_9_3950x_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_9_3950x_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_9_3950x:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_9_3950x:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_7_3800x_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_7_3800x_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_7_3800x:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_7_3800x:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_3_5425u_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_3_5425u_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_3_5425u:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_3_5425u:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_5_3400g_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_5_3400g_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_5_3400g:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_5_3400g:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_7_5800h_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_7_5800h_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_7_5800h:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_7_5800h:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_7_5800hs_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_7_5800hs_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_7_5800hs:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_7_5800hs:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_7_5800u_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_7_5800u_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_7_5800u:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_7_5800u:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_7_5825c_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_7_5825c_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_7_5825c:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_7_5825c:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_7_5825u_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_7_5825u_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_7_5825u:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_7_5825u:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_5_3450g_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_5_3450g_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_5_3450g:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_5_3450g:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_5_3600_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_5_3600_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_5_3600:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_5_3600:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_5_3600x_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_5_3600x_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_5_3600x:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_5_3600x:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_5_5560u_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_5_5560u_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_5_5560u:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_5_5560u:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_5_5600h_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_5_5600h_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_5_5600h:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_5_5600h:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_5_5600u_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_5_5600u_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_5_5600u:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_5_5600u:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_5_5600hs_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_5_5600hs_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_5_5600hs:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_5_5600hs:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_5_5600x_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_5_5600x_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_5_5600x:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_5_5600x:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_5_5625c_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_5_5625c_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_5_5625c:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_5_5625c:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_5_5625u_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_5_5625u_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_5_5625u:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_5_5625u:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_5_5700g_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_5_5700g_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_5_5700g:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_5_5700g:-:*:*:*:*:*:*:*
  • cpe:2.3:o:amd:ryzen_5_5700ge_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:amd:ryzen_5_5700ge_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:amd:ryzen_5_5700ge:-:*:*:*:*:*:*:*
    cpe:2.3:h:amd:ryzen_5_5700ge:-:*:*:*:*:*:*:*

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