Vulnerability record · CVE-2021-20325 · published 18 February 2022

CVE-2021-20325: Redhat enterprise linux memory buffer overflow vulnerability

Redhat · Enterprise Linux

Missing fixes for CVE-2021-40438 and CVE-2021-26691 in the versions of httpd, as shipped in Red Hat Enterprise Linux 8.5.0, causes a security regression compared to the versions shipped in Red Hat Enterprise Linux 8.4. A user who installs or updates to Red Hat Enterprise Linux 8.5.0 would be vulnerable to the mentioned CVEs, even if they were properly fixed in Red Hat Enterprise Linux 8.4. CVE-2021-20325 was assigned to that Red Hat specific security regression and it does not affect the upstream versions of httpd.

9.8 CVSS 3.1 Critical EPSS 1.6% · top 24.7% CWE-119 · Memory buffer overflowCWE-787 · Out-of-bounds write

9.8CVSS 3.1 base score, v2 10.0

1.6%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

2References

17 Jun 2026Last modified by NVD

Description

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Enterprise Linux Redhat

References

Link	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=2017321	Issue TrackingVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2017321	Issue TrackingVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-20325), CISA KEV, FIRST EPSS (scores of 2026-10-16). This page is refreshed as NVD updates the record.