CVE-2018-16446: An issue was discovered in SeaCMS through 6.61

Q: How do I fix CVE-2018-16446?

seacms: upgrade to newer than 6.61. Exact commands for each OS are on this page.

Q: Is CVE-2018-16446 being exploited?

CVE-2018-16446 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2018-16446 affect?

CVE-2018-16446 affects seacms. Severity is high (CVSS 7.5). An issue was discovered in SeaCMS through 6.61. adm1n/admin_database.php allows remote attackers to delete arbitrary files via directory traversal sequences in the bakfiles parameter. This can allow the product to be reinstalled by deleting

Q: How urgent is CVE-2018-16446?

Priority 51/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.5REMOTEUPGRADE

CVE-2018-16446 is a high-severity flaw (CVSS 7.5) affecting seacms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in SeaCMS through 6.61. adm1n/admin_database.php allows remote attackers to delete arbitrary files via directory traversal sequences in the bakfiles parameter. This can allow the product to be reinstalled by deleting install_lock.txt.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.9% (top 20%)
CISA exploited list	No
Weakness	CWE-22
Published	2018-09-04
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: seamcms

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

Am I affected?

Timeline

2018-09-04 04:29 UTCPublished CVE record published
2026-06-17 01:44 UTCUpdated Record last modified

seamcms seacms UPGRADE

Affected: <= 6.61

Fixed in: newer than 6.61

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 6.61 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade seacms

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade seacms

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2018-16446?

seacms: upgrade to newer than 6.61. Exact commands for each OS are on this page.

Is CVE-2018-16446 being exploited?

CVE-2018-16446 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-2018-16446 affect?

CVE-2018-16446 affects seacms. Severity is high (CVSS 7.5). An issue was discovered in SeaCMS through 6.61. adm1n/admin_database.php allows remote attackers to delete arbitrary files via directory traversal sequences in the bakfiles parameter. This can allow the product to be reinstalled by deleting

How urgent is CVE-2018-16446?

Priority 51/100. High severity; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

Related CVEs

CVE-2025-15003 MEDIUM 4.7 UPGRADE A vulnerability was found in SeaCMS up to 13.3
CVE-2025-10662 MEDIUM 4.7 UPGRADE A vulnerability has been found in SeaCMS up to 13.3
CVE-2025-11071 MEDIUM 4.7 DOWNGRADE A security vulnerability has been detected in SeaCMS 13.3.20250820
CVE-2023-50470 MEDIUM 5.4 DOWNGRADE A cross-site scripting (XSS) vulnerability in the component admin_ Video.php of SeaCMS v12.8 allows attackers
CVE-2023-46987 HIGH 8.8 DOWNGRADE SeaCMS v12.9 was discovered to contain a remote code execution (RCE) vulnerability via the component /augap/ad

References

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