What is the CVSS score of CVE-2021-28113?

CVE-2021-28113 has a CVSS 3.1 base score of 6.7 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L. EPSS exploitation probability: 22.3%.

Is there a public PoC exploit available for CVE-2021-28113?

Yes, a public proof-of-concept exploit is available for CVE-2021-28113. Prioritise patching immediately. EPSS: 22.3%.

Access Gateway CVE-2021-28113

MEDIUM

OS Command Injection (CWE-78)

2021-04-02 cve@mitre.org

Command Injection Access Gateway

6.7

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.7 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

Low

Lifecycle Timeline

CVE Published

Apr 02, 2021 - 15:15 nvd

MEDIUM 6.7

DescriptionNVD

AnalysisAI

A command injection vulnerability in the cookieDomain and relayDomain parameters of Okta Access Gateway before 2020.9.3 allows attackers (with admin access to the Okta Access Gateway UI) to execute. Rated medium severity (CVSS 6.7), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as OS Command Injection (CWE-78), which allows attackers to execute arbitrary operating system commands on the host. A command injection vulnerability in the cookieDomain and relayDomain parameters of Okta Access Gateway before 2020.9.3 allows attackers (with admin access to the Okta Access Gateway UI) to execute OS commands as a privileged system account. Affected products include: Okta Access Gateway. Version information: before 2020.9.3.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Avoid passing user input to shell commands. Use language-specific APIs instead of shell execution. Apply strict input validation with allowlists.