CVE-2021-27811

7.2 highEPSS 1.2%

High (7.2) in qibosoft qibosoft. EPSS 1.2% chance of exploitation in the next 30 days.

A code injection vulnerability has been discovered in the Upgrade function of QibosoftX1 v1.0. An attacker is able execute arbitrary PHP code via exploitation of client_upgrade_edition.php and Upgrade.php.

Severity

CVSS 3.1

7.2 high

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

EPSS: 1.2% chance of exploitation in the next 30 days; higher than 68% of CVEs (scores of 2026-10-31)
CWE: CWE-94
Published: 2021-05-21
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

qibosoft:qibosoft

References

https://github.com/whiskey-jj/w2s2x2222.github.io/issues/2
https://www.cnvd.org.cn/flaw/show/2297879
https://github.com/whiskey-jj/w2s2x2222.github.io/issues/2
https://www.cnvd.org.cn/flaw/show/2297879

Check your stack JSON