VULNERABILITY INTELLIGENCE
CVE-2021-39275
CVSS score9.8 CRITICAL
EPSS probability39.40%
CISA KEVNot currently listed
Published2021-09-16
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Description
ap_escape_quotes() may write beyond the end of a buffer when given malicious input. No included modules pass untrusted data to these functions, but third-party / external modules may. This issue affects Apache HTTP Server 2.4.48 and earlier.
Weakness classification
- CWE-787: Out-of-bounds Write
Primary references
- security@apache.org — Third Party Advisory
- security@apache.org — Release Notes, Vendor Advisory
- security@apache.org — Patch
- security@apache.org — Patch
- security@apache.org — Patch
- security@apache.org — Patch
- security@apache.org — Mailing List, Third Party Advisory
- security@apache.org — Third Party Advisory
- security@apache.org — Third Party Advisory
- security@apache.org — Third Party Advisory
- security@apache.org — Third Party Advisory
- security@apache.org — Third Party Advisory