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CRITICAL

CVE-2021-42669

CVSS v3

9.8

CRITICAL

Score EPSS

23.3 %

probabilité d’exploitation au 2026-10-05

CISA KEV

Non

exploitation connue

Exploitation

—

statut SSVC

Description

A file upload vulnerability exists in Sourcecodester Engineers Online Portal in PHP via dashboard_teacher.php, which allows changing the avatar through teacher_avatar.php. Once an avatar gets uploaded it is getting uploaded to the /admin/uploads/ directory, and is accessible by all users. By uploading a php webshell containing "<?php system($_GET["cmd"]); ?>" the attacker can execute commands on the web server with - /admin/uploads/php-webshell?cmd=id.

Détails techniques

Publiée le
2021-11-05

Questions fréquentes

Qu’est-ce que CVE-2021-42669 ?

A file upload vulnerability exists in Sourcecodester Engineers Online Portal in PHP via dashboard_teacher.php, which allows changing the avatar through teacher_avatar.php. Once an avatar gets uploaded it is getting uploaded to the /admin/uploads/ directory, and is accessible by all users. By uploading a php webshell containing "<?php system($_GET["cmd"]); ?>" the attacker can execute commands on the web server with - /admin/uploads/php-webshell?cmd=id.

CVE-2021-42669 est-elle activement exploitée ?

Aucune exploitation active de CVE-2021-42669 n’est confirmée. Son score EPSS était de 23.3 % au 2026-10-05, soit la probabilité estimée d’exploitation dans les 30 prochains jours.

Quel est le score CVSS de CVE-2021-42669 ?

CVE-2021-42669 a un score de base CVSS v3 de 9.8 (gravité CRITICAL).

CVE-2021-42669 touche-t-elle votre environnement ?

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