CVE-2009-1637: profile.php in Simple Customer 1.3 does not require administrative authentication, which allows remote attacke

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MEDIUM 6.4DOWNGRADE

CVE-2009-1637 is a medium-severity flaw (CVSS 6.4) affecting simple customer. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

profile.php in Simple Customer 1.3 does not require administrative authentication, which allows remote attackers to change the admin e-mail address and password via the email and password parameters.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.4 (Medium)
EPSS exploit chance	2.2% (top 17%)
CISA exploited list	No
Weakness	CWE-264
Published	2009-05-15
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: simplecustomer

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2009-05-15 15:30 UTCPublished CVE record published
2026-06-16 23:07 UTCUpdated Record last modified

simplecustomer simple customer DOWNGRADE

Affected: 1.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.3

1. Check installed version

apt-cache policy simple-customer || rpm -q simple-customer || simple-customer --version

2. No fixed release: DOWNGRADE to a release before 1.3 (Debian / Ubuntu)

apt-cache madison simple-customer sudo apt install simple-customer=<VERSION_BEFORE_1.3> sudo apt-mark hold simple-customer

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

dnf --showduplicates list simple-customer sudo dnf downgrade simple-customer-<VERSION_BEFORE_1.3> sudo dnf versionlock add simple-customer

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Simple Customer 1.3 - Arbitrary Change Admin Password

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-2009-1637?

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

Is CVE-2009-1637 being exploited?

CVE-2009-1637 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-2009-1637 affect?

CVE-2009-1637 affects simple customer. Severity is medium (CVSS 6.4). profile.php in Simple Customer 1.3 does not require administrative authentication, which allows remote attackers to change the admin e-mail address and password via the email and password parameters.

How urgent is CVE-2009-1637?

Priority 48/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2008-6332 HIGH 7.5 DOWNGRADE SQL injection vulnerability in login.php in Simple Customer 1.2 allows remote attackers to execute arbitrary S
CVE-2008-6326 HIGH 7.5 MITIGATE SQL injection vulnerability in login.php in Simple Customer as downloaded on 20081118 allows remote attackers
CVE-2008-6081 HIGH 7.5 DOWNGRADE SQL injection vulnerability in contact.php in Simple Customer 1.2 allows remote attackers to execute arbitrary

References

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