CVE-2021-36623: Arbitrary File Upload in Sourcecodester Phone Shop Sales Management System 1.0 enables RCE.

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2021-36623 is a critical-severity flaw (CVSS 9.8) affecting phone shop sales management system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Arbitrary File Upload in Sourcecodester Phone Shop Sales Management System 1.0 enables RCE.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.8% (top 21%)
CISA exploited list	No
Weakness	CWE-434
Published	2021-08-03
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: phone shop sales management system project

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

Am I affected?

Timeline

2021-08-03 18:15 UTCPublished CVE record published
2026-06-17 03:58 UTCUpdated Record last modified

phone shop sales management system project phone shop sales management 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 phone-shop-sales-management-system || rpm -q phone-shop-sales-management-system || phone-shop-sales-management-system --version

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

apt-cache madison phone-shop-sales-management-system sudo apt install phone-shop-sales-management-system=<VERSION_BEFORE_1.0> sudo apt-mark hold phone-shop-sales-management-system

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

dnf --showduplicates list phone-shop-sales-management-system sudo dnf downgrade phone-shop-sales-management-system-<VERSION_BEFORE_1.0> sudo dnf versionlock add phone-shop-sales-management-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-2021-36623?

phone shop sales management system: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-36623 being exploited?

CVE-2021-36623 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-2021-36623 affect?

CVE-2021-36623 affects phone shop sales management system. Severity is critical (CVSS 9.8). Arbitrary File Upload in Sourcecodester Phone Shop Sales Management System 1.0 enables RCE.

How urgent is CVE-2021-36623?

Priority 64/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

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CVE-2021-36560 CRITICAL 9.8 DOWNGRADE Phone Shop Sales Managements System using PHP with Source Code 1.0 is vulnerable to authentication bypass whic
CVE-2021-35337 MEDIUM 4.3 DOWNGRADE Sourcecodester Phone Shop Sales Managements System 1.0 is vulnerable to Insecure Direct Object Reference (IDOR

References

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