What is the CVSS score of CVE-2021-38370?

CVE-2021-38370 has a CVSS 3.1 base score of 5.9 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N. EPSS exploitation probability: 1.6%.

Is there a public PoC exploit available for CVE-2021-38370?

Yes, a public proof-of-concept exploit is available for CVE-2021-38370. Prioritise patching immediately. EPSS: 1.6%.

Alpine CVE-2021-38370

MEDIUM

Command Injection (CWE-77)

2021-08-10 cve@mitre.org

Command Injection Alpine

5.9

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.9 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Lifecycle Timeline

CVE Published

Aug 10, 2021 - 15:15 nvd

MEDIUM 5.9

DescriptionNVD

In Alpine before 2.25, untagged responses from an IMAP server are accepted before STARTTLS.

AnalysisAI

In Alpine before 2.25, untagged responses from an IMAP server are accepted before STARTTLS. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Command Injection (CWE-77), which allows attackers to inject arbitrary commands into system command execution. In Alpine before 2.25, untagged responses from an IMAP server are accepted before STARTTLS. Affected products include: Alpine Project Alpine. Version information: before 2.25.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use parameterized APIs, avoid shell execution, validate input with strict allowlists.