CVE-2020-18462: File Upload vulnerabilty in AikCms v2.0.0 in poster_edit.php because the background file management office doe

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HIGH 7.2DOWNGRADE

CVE-2020-18462 is a high-severity flaw (CVSS 7.2) affecting aikcms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

File Upload vulnerabilty in AikCms v2.0.0 in poster_edit.php because the background file management office does not verify the uploaded file.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	1.0% (top 38%)
CISA exploited list	No
Weakness	CWE-434
Published	2021-08-12
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: aikcms

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

Am I affected?

Timeline

2021-08-12 19:15 UTCPublished CVE record published
2026-06-17 02:59 UTCUpdated Record last modified

aikcms aikcms DOWNGRADE

Affected: 2.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0

1. Check installed version

apt-cache policy aikcms || rpm -q aikcms || aikcms --version

2. No fixed release: DOWNGRADE to a release before 2.0 (Debian / Ubuntu)

apt-cache madison aikcms sudo apt install aikcms=<VERSION_BEFORE_2.0> sudo apt-mark hold aikcms

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

dnf --showduplicates list aikcms sudo dnf downgrade aikcms-<VERSION_BEFORE_2.0> sudo dnf versionlock add aikcms

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-2020-18462?

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

Is CVE-2020-18462 being exploited?

CVE-2020-18462 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-2020-18462 affect?

CVE-2020-18462 affects aikcms. Severity is high (CVSS 7.2). File Upload vulnerabilty in AikCms v2.0.0 in poster_edit.php because the background file management office does not verify the uploaded file.

How urgent is CVE-2020-18462?

Priority 46/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

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CVE-2020-18463 LOW 2.4 DOWNGRADE Cross Site Request Forgery (CSRF) vulnerability exists in v2.0.0 in video_list.php, which can let a malicious

References

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