Is CVE-2021-38243 actively exploited?

No active exploitation of CVE-2021-38243 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-38243 be exploited remotely?

Yes. CVE-2021-38243 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-38243?

CVE-2021-38243 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2021-38243

NVD-CWE-noinfoPublished: September 27, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

xunruicms up to v4.5.1 was discovered to contain a remote code execution (RCE) vulnerability in /index.php. This vulnerability allows attackers to execute arbitrary code via a crafted GET request.

NVD Source

Risk Analysis

Xunruicms contains a remote code execution vulnerability that allows an unauthenticated attacker to execute arbitrary code via a crafted GET request. This critical flaw poses a high risk of total system takeover.

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

Recommended Action

Users should update to a version of Xunruicms beyond 4.5.1 to remediate this issue.

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-2021-38243 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.