What is the CVSS score of CVE-2021-21909?

CVE-2021-21909 has a CVSS 3.1 base score of 8.1 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H. EPSS exploitation probability: 1.0%.

Is there a public PoC exploit available for CVE-2021-21909?

Yes, a public proof-of-concept exploit is available for CVE-2021-21909. Prioritise patching immediately. EPSS: 1.0%.

Ic Module Firmware CVE-2021-21909

HIGH

Path Traversal (CWE-22)

2021-12-22 talos-cna@cisco.com

Path Traversal Ic Module Firmware

8.1

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.1 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Dec 22, 2021 - 19:15 nvd

HIGH 8.1

DescriptionNVD

Specially-crafted command line arguments can lead to arbitrary file deletion in the del .cnt|.log file delete command. An attacker can provide malicious inputs to trigger this vulnerability

AnalysisAI

Specially-crafted command line arguments can lead to arbitrary file deletion in the del .cnt|.log file delete command. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Path Traversal (CWE-22), which allows attackers to access files and directories outside the intended path. Specially-crafted command line arguments can lead to arbitrary file deletion in the del .cnt|.log file delete command. An attacker can provide malicious inputs to trigger this vulnerability Affected products include: Garrett Ic Module Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate and canonicalize file paths. Use chroot or sandboxing. Reject input containing path separators or '../' sequences.