CVE-2009-1550: Zakkis Technology ABC Advertise 1.0 does not properly restrict access to admin.inc.php, which allows remote at

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MEDIUM 5.0DOWNGRADE

CVE-2009-1550 is a medium-severity flaw (CVSS 5.0) affecting abc advertise. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Zakkis Technology ABC Advertise 1.0 does not properly restrict access to admin.inc.php, which allows remote attackers to obtain the administrator login name and password via a direct request.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	2.3% (top 17%)
CISA exploited list	No
Weakness	CWE-264
Published	2009-05-06
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: zakkis

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

Am I affected?

Timeline

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

zakkis abc advertise 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 abc-advertise || rpm -q abc-advertise || abc-advertise --version

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

apt-cache madison abc-advertise sudo apt install abc-advertise=<VERSION_BEFORE_1.0> sudo apt-mark hold abc-advertise

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

dnf --showduplicates list abc-advertise sudo dnf downgrade abc-advertise-<VERSION_BEFORE_1.0> sudo dnf versionlock add abc-advertise

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: ABC Advertise 1.0 - Admin Password Disclosure

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-2009-1550?

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

Is CVE-2009-1550 being exploited?

CVE-2009-1550 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-2009-1550 affect?

CVE-2009-1550 affects abc advertise. Severity is medium (CVSS 5.0). Zakkis Technology ABC Advertise 1.0 does not properly restrict access to admin.inc.php, which allows remote attackers to obtain the administrator login name and password via a direct request.

How urgent is CVE-2009-1550?

Priority 43/100. Public exploit reference

Software pages

PHP vulnerabilities

References

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