Is CVE-2023-43135 actively exploited?

No active exploitation of CVE-2023-43135 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-43135 be exploited remotely?

Yes. CVE-2023-43135 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-43135?

CVE-2023-43135 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2023-43135

CWE-862Published: September 20, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

There is an unauthorized access vulnerability in TP-LINK ER5120G 4.0 2.0.0 Build 210817 Rel.80868n, which allows attackers to obtain sensitive information of the device without authentication, obtain user tokens, and ultimately log in to the device backend management.

NVD Source

Risk Analysis

The TP-LINK ER5120G router has an unauthorized access vulnerability that allows attackers to steal sensitive information and user tokens. This enables attackers to bypass authentication and gain administrative access to the device management backend.

No public exploit is known, and it is not in the CISA KEV. The vulnerability is remotely exploitable.

Recommended Action

Update the TP-LINK ER5120G firmware to the latest version.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-43135 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.