How severe is CVE-2021-28423?

CVE-2021-28423 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-28423 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-28423?

CVE-2021-28423 affects Phpgurukul Teachers Record Management System. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-28423?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-28423 published?

CVE-2021-28423 was published on 2021-07-01 and last updated on 2026-06-17.

CVE-2021-28423

CVE-2021-28423 is a high-severity vulnerability in Phpgurukul Teachers Record Management System with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-89.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-89
Affected product: Phpgurukul Teachers Record Management System
Published: 2021-07-01
Last modified: 2026-06-17

Description

Multiple SQL Injection vulnerabilities in Teachers Record Management System 1.0 thru 2.1 allow remote authenticated users to execute arbitrary SQL commands via the 'editid' GET parameter in edit-subjects-detail.php, edit-teacher-detail.php, or the 'searchdata' POST parameter in search.php.

Frequently asked questions

What is CVE-2021-28423?: Multiple SQL Injection vulnerabilities in Teachers Record Management System 1.0 thru 2.1 allow remote authenticated users to execute arbitrary SQL commands via the 'editid' GET parameter in edit-subjects-detail.php, edit-teacher-detail.php, or the 'searchdata' POST parameter in search.php.
How severe is CVE-2021-28423?: CVE-2021-28423 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-28423 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-28423?: CVE-2021-28423 affects Phpgurukul Teachers Record Management System. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-28423?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-28423 published?: CVE-2021-28423 was published on 2021-07-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:phpgurukul:teachers_record_management_system:1.0:*:*:*:*:*:*:*

More vulnerabilities in Phpgurukul Teachers Record Management System

CVE-2024-51064 — Critical (CVSS 9.8): Phpgurukul Teachers Record Management System v2.1 is vulnerable to SQL Injection via the tid parameter to…
CVE-2021-26822 — Critical (CVSS 9.8): Teachers Record Management System 1.0 is affected by a SQL injection vulnerability in 'searchteacher' POST parameter in…
CVE-2024-51063 — Critical (CVSS 9.1): Phpgurukul Teachers Record Management System v2.1 is vulnerable to SQL Injection in add-teacher.php via the mobile…
CVE-2025-8951 — High (CVSS 7.3): A vulnerability has been found in PHPGurukul Teachers Record Management System 2.1. Affected is an unknown function of…
CVE-2025-6888 — High (CVSS 7.3): A vulnerability was found in PHPGurukul Teachers Record Management System 2.1. It has been classified as critical. This…
CVE-2025-6885 — High (CVSS 7.3): A vulnerability, which was classified as critical, was found in PHPGurukul Teachers Record Management System 2.1.…

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