TI-2021-18879 Aliases CVE-2021-42643 GHSA-x6r6-w4vr-79gv

cmseasy V7.7.5_20211012 is affected by an arbitrary file write vulnerability.

MEDIUM 42CWE-22Published 2022-05-17 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

cmseasy V7.7.5_20211012 is affected by an arbitrary file write vulnerability. Through this vulnerability, a PHP script file is written to the website server, and accessing this file can lead to a code execution vulnerability.

Why it matters now

EPSS 0.01752 78th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:cmseasy:cmseasy:7.7.5_20211012:::::::*	7.7.5_20211012	Vulnerable	Cmseasy

cpe:2.3:a:cmseasy:cmseasy:7.7.5_20211012:*:*:*:*:*:*:* Versions 7.7.5_20211012 Vulnerable ·Cmseasy

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-42643
2026-10-03 Alias added: GHSA-x6r6-w4vr-79gv

References

Exploit 1

https://jdr2021.github.io/2021/10/14/CmsEasy_7.7.5_20211012%E5%AD%98%E5%9C%A8%E4%BB%BB%E6%84%8F%E6%96%87%E4%BB%B6%E5%86%99%E5%85%A5%E5%92%8C%E4%BB%BB%E6%84%8F%E6%96%87%E4%BB%B6%E8%AF%BB%E5%8F%96%E6%BC%8F%E6%B4%9E/

TI-2023-17429 cmseasy v7.7.7.7 20230520 was discovered to contain a path traversal vulnerability via… CVSS 3.1CRITICAL 9.8
TI-2024-00482 CmsEasy language_admin.php getslide_child_action sql injection CVSS 3.1CRITICAL 9.8
TI-2024-20873 Directory Traversal vulnerability in lib/admin/image.admin.php in cmseasy v7.7.7.9… CVSS 3.1HIGH 7.5
TI-2020-13378 An issue was discovered in cmseasy v7.0.0 that allows user credentials to be sent in… CVSS 3.1HIGH 7.5
TI-2024-22670 CmsEasy v7.7.7.9 was discovered to contain a local file inclusion vunerability via the… CVSS 3.1HIGH 7.5
TI-2024-21229 CMSeasy 7.7.7.9 is vulnerable to code execution. CVSS 3.1MEDIUM 6.4

See all 22 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences