CVE-2018-14729: The database backup feature in upload/source/admincp/admincp_db.php in Discuz! 2.5 and 3.4 allows remote attac

This week

HIGH 8.8UPGRADE

CVE-2018-14729 is a high-severity flaw (CVSS 8.8) affecting discuz\!. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The database backup feature in upload/source/admincp/admincp_db.php in Discuz! 2.5 and 3.4 allows remote attackers to execute arbitrary PHP code.

Why this priority

High severity
EPSS top 4%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	10.4% (top 4%)
CISA exploited list	No
Weakness	CWE-20
Published	2019-05-22
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: comsenz

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

Am I affected?

Timeline

2019-05-22 18:29 UTCPublished CVE record published
2026-06-17 01:41 UTCUpdated Record last modified

comsenz discuz\! UPGRADE

Affected: >= 1.5 and <= 2.5 · >= 3.0 and <= 3.4

Fixed in: newer than 3.4

Safe to downgrade to: a release before 1.5

1. Check installed version

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

2. UPGRADE to newer than 3.4 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade discuz

Note

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

3. If no update is available yet, DOWNGRADE to a release before 1.5 (Debian / Ubuntu)

apt-cache madison discuz sudo apt install discuz=<VERSION_BEFORE_1.5> sudo apt-mark hold discuz

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list discuz sudo dnf downgrade discuz-<VERSION_BEFORE_1.5> sudo dnf versionlock add discuz

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-2018-14729?

discuz\!: upgrade to newer than 3.4. Exact commands for each OS are on this page.

Is CVE-2018-14729 being exploited?

CVE-2018-14729 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-2018-14729 affect?

CVE-2018-14729 affects discuz\!. Severity is high (CVSS 8.8). The database backup feature in upload/source/admincp/admincp_db.php in Discuz! 2.5 and 3.4 allows remote attackers to execute arbitrary PHP code.

How urgent is CVE-2018-14729?

Priority 60/100. High severity; EPSS top 4%: very likely to be exploited; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2018-19464 MEDIUM 4.8 DOWNGRADE Discuz! X3.4 allows XSS via admin.php because admincp/admincp_setting.php and template\default\common\footer.h

References

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