CVE-2021-41691

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

1.79% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 76.7% of scored records. A rank, not a probability.

NVD base score

9.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2025-06-24 00:00Z1 YR AGO

Last updated

2025-06-25 14:34Z1 YR AGO

Reserved

2021-09-27

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

• CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')Base

Data version

5.1

Document digest

4dc1af751b0b3ef1a5b87a0fd592e702095d509e30d8e426d9252fe69910236f

• opensis.comhttps://opensis.com/
• github.comhttps://github.com/OS4ED/openSIS-Classic/
• resources.s4e.iohttps://resources.s4e.io/blog/opensis-student-information-system-0-day-vulnerability-cve-2021-41691/