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Vulnerability · Published Oct 31, 2020 · Assigned by mitre

CVE-2020-28037

Critical 9.8

In plain English

A critical-severity security flaw in the wordpress package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 8.1% (higher than 95% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)9.8Critical
Exploit odds (30 days)8.1%top 5.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

is_blog_installed in wp-includes/functions.php in WordPress before 5.5.2 improperly determines whether WordPress is already installed, which might allow an attacker to perform a new installation, leading to remote code execution (as well as a denial of service for the old installation).

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12wordpress5.5.3+dfsg1-1DEBIAN-CVE-2020-28037
Debian:13wordpress5.5.3+dfsg1-1DEBIAN-CVE-2020-28037
Debian:14wordpress5.5.3+dfsg1-1DEBIAN-CVE-2020-28037
Ubuntu:22.04:LTSwordpressno fix listedUBUNTU-CVE-2020-28037
Ubuntu:24.04:LTSwordpressno fix listedUBUNTU-CVE-2020-28037
Ubuntu:25.10wordpressno fix listedUBUNTU-CVE-2020-28037
Ubuntu:26.04:LTSwordpressno fix listedUBUNTU-CVE-2020-28037
Ubuntu:26.10wordpressno fix listedUBUNTU-CVE-2020-28037

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

References