CVE-2021-35437
CWE-89Published: November 16, 2023· Updated: Jun 17, 2026
Official Description
SQL injection vulnerability in LMXCMS v.1.4 allows attacker to execute arbitrary code via the TagsAction.class.
Risk Analysis
LMXCMS v.1.4 contains a SQL injection vulnerability that allows an attacker to execute arbitrary code. The critical severity rating reflects the potential for full system compromise without requiring authentication.
No public exploit is currently known for this issue, and it is not in the CISA KEV. The flaw is remotely exploitable with low attack complexity.
Administrators should update LMXCMS to a patched version if available. Implement input validation and restrict access to administrative interfaces.
Technical Analysis
CVE-2021-35437 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.
From a weakness classification perspective (CWE-89): SQL injection vulnerabilities allow attackers to manipulate database queries, potentially exposing or modifying sensitive data.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (2)
Quick Facts
Related CVEs (CWE-89)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2021-35437 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts