What is the CVSS score of CVE-2021-27209?

CVE-2021-27209 has a CVSS 3.1 base score of 7.1 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N. EPSS exploitation probability: 0.2%.

Is there a public PoC exploit available for CVE-2021-27209?

Yes, a public proof-of-concept exploit is available for CVE-2021-27209. Prioritise patching immediately. EPSS: 0.2%.

Archer C5V Firmware CVE-2021-27209

HIGH

Cleartext Transmission of Sensitive Information (CWE-319)

2021-02-13 cve@mitre.org

TP-Link Information Disclosure Archer C5V Firmware

7.1

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.1 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Lifecycle Timeline

CVE Published

Feb 13, 2021 - 01:15 nvd

HIGH 7.1

DescriptionNVD

In the management interface on TP-Link Archer C5v 1.7_181221 devices, credentials are sent in a base64 format over cleartext HTTP.

AnalysisAI

In the management interface on TP-Link Archer C5v 1.7_181221 devices, credentials are sent in a base64 format over cleartext HTTP. Rated high severity (CVSS 7.1), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-319. In the management interface on TP-Link Archer C5v 1.7_181221 devices, credentials are sent in a base64 format over cleartext HTTP. Affected products include: Tp-Link Archer C5V Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.