What is the CVSS score of CVE-2021-35331?

CVE-2021-35331 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 1.6%.

Is there a public PoC exploit available for CVE-2021-35331?

Yes, a public proof-of-concept exploit is available for CVE-2021-35331. Prioritise patching immediately. EPSS: 1.6%.

Is there a patch available for CVE-2021-35331?

Yes, a patch is available for CVE-2021-35331. Update the affected software to the latest version immediately.

Tcl CVE-2021-35331

HIGH

Use of Externally-Controlled Format String (CWE-134)

2021-07-05 cve@mitre.org

RCE Tcl

7.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.8 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Jul 05, 2021 - 15:15 nvd

HIGH 7.8

DescriptionNVD

In Tcl 8.6.11, a format string vulnerability in nmakehlp.c might allow code execution via a crafted file. NOTE: multiple third parties dispute the significance of this finding

AnalysisAI

In Tcl 8.6.11, a format string vulnerability in nmakehlp.c might allow code execution via a crafted file. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified under CWE-134. In Tcl 8.6.11, a format string vulnerability in nmakehlp.c might allow code execution via a crafted file. NOTE: multiple third parties dispute the significance of this finding Affected products include: Tcl.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.