CVE-2025-40728: SQL injection vulnerability in Customer Support System v1.0

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HIGH 8.8DOWNGRADE

CVE-2025-40728 is a high-severity flaw (CVSS 8.8) affecting customer support system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SQL injection vulnerability in Customer Support System v1.0. This vulnerability allows an authenticated attacker to retrieve, create, update and delete databases via the id parameter in the /customer_support/manage_user.php endpoint.

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.5% (top 56%)
CISA exploited list	No
Weakness	CWE-89
Published	2025-06-16
Last modified	2026-06-17

Publisher (CNA): Spanish National Cybersecurity Institute, S.A. (INCIBE) · Vendor: oretnom23

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-06-16 09:15 UTCPublished CVE record published
2026-06-17 09:22 UTCUpdated Record last modified

oretnom23 customer support system DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy customer-support-system || rpm -q customer-support-system || customer-support-system --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison customer-support-system sudo apt install customer-support-system=<VERSION_BEFORE_1.0> sudo apt-mark hold customer-support-system

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list customer-support-system sudo dnf downgrade customer-support-system-<VERSION_BEFORE_1.0> sudo dnf versionlock add customer-support-system

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-40728?

customer support system: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-40728 being exploited?

CVE-2025-40728 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-40728 affect?

CVE-2025-40728 affects customer support system. Severity is high (CVSS 8.8). SQL injection vulnerability in Customer Support System v1.0. This vulnerability allows an authenticated attacker to retrieve, create, update and delete databases via the id parameter in the /customer_support/manage_user.php endpoint.

How urgent is CVE-2025-40728?

Priority 42/100. High severity

Software pages

PHP vulnerabilities

Related CVEs

CVE-2025-70141 CRITICAL 9.4 DOWNGRADE SourceCodester Customer Support System 1.0 contains an incorrect access control vulnerability in ajax.php
CVE-2025-40729 MEDIUM 6.1 DOWNGRADE Reflected Cross-Site Scripting (XSS) in /customer_support/index.php in Customer Support System v1.0, which all
CVE-2023-51281 MEDIUM 5.4 DOWNGRADE Cross Site Scripting vulnerability in Customer Support System v.1.0 allows a remote attacker to escalate privi
CVE-2023-50071 HIGH 8.8 DOWNGRADE Sourcecodester Customer Support System 1.0 has multiple SQL injection vulnerabilities in /customer_support/aja
CVE-2023-50070 HIGH 8.8 DOWNGRADE Sourcecodester Customer Support System 1.0 has multiple SQL injection vulnerabilities in /customer_support/aja

References

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