The ap_rwrite() function in Apache HTTP Server 2.4.53 and earlier may read unintended memory if an attacker can cause the server to reflect very large input using ap_rwrite() or ap_rputs(), such as with mod_luas r:puts() function. Modules compiled and distributed separately from Apache HTTP Server that use the 'ap_rputs' function and may pass it a very large (INT_MAX or larger) string must be compiled against current headers to resolve the issue.
Conclusion & alert: CVE-2022-28614 is rated Moderate Risk (56.5/100): CVSS Medium severity, with high exploitation likelihood (EPSS 4.40%, 90th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +3.81% over the last day, indicating growing attacker interest. Mandatory action: High exploitation likelihood—assess exposure and prioritize remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.59% | 4.40% | +3.81% |
| 2 | 2026-03-04 | 0.18% | 0.59% | +0.42% |
| 3 | 2026-03-01 | — | 0.18% | — |
Full EPSS history (45 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.3 | 3.1 | MEDIUM |
|
3.9 | 1.4 | [email protected] |
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
medium | CVE-2022-28614: 1 source package rows (apache2); 7 state rows across 7 repos (3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 7, open 0. | https://security.alpinelinux.org/vuln/CVE-2022-28614 |
debian
|
not yet assigned | CVE-2022-28614 not yet assigned priority: Debian including 1 source packages (apache2), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2022-28614 |
gentoo
|
high | CVE-2022-28614: 1 GLSA(s) (202208-20), 2 atom(s) (app-admin/apache-tools, www-servers/apache); latest impact high. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2022-28614 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2022-28614 |
suse
|
medium | CVE-2022-28614 severity moderate: SUSE including 319 source package names (2.8-13.5:apache2-utils-2.4.51-150400.6.3.1, 4.3.1.9.7.1:apache2-2.4.51-150400.6.3.1, …), 658 product×package rows across 101 product lines (Container bci/php-apache, Container suse/manager/4.3/proxy-httpd, … (101 product lines)): Fixed 427, Known Affected 231. | https://www.suse.com/security/cve/CVE-2022-28614/ |
ubuntu
|
low | CVE-2022-28614 low priority: Ubuntu including 1 source packages (apache2), 8 status rows across 8 suites (bionic, focal, impish, jammy, kinetic, trusty, upstream, xenial): released 8. | https://ubuntu.com/security/CVE-2022-28614 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| apache | http_server | <= 2.4.53 | cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:* |
| fedoraproject | fedora | 35 | cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* |
| fedoraproject | fedora | 36 | cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* |
| netapp | clustered_data_ontap | — | cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:* |