Memory leak in the winnt_accept function in server/mpm/winnt/child.c in the WinNT MPM in…
Priority MEDIUM 40CWE-399Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-399 and the CVSS impact.
Summary
Memory leak in the winnt_accept function in server/mpm/winnt/child.c in the WinNT MPM in the Apache HTTP Server 2.4.x before 2.4.10 on Windows, when the default AcceptFilter is enabled, allows remote attackers to cause a denial of service (memory consumption) via crafted requests.
Why it matters now
EPSS 0.16805 97th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 9
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:apache:http_server:2.4.1:*:*:*:*:*:*:* | 2.4.1 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:2.4.2:*:*:*:*:*:*:* | 2.4.2 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:2.4.3:*:*:*:*:*:*:* | 2.4.3 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:2.4.4:*:*:*:*:*:*:* | 2.4.4 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:2.4.6:*:*:*:*:*:*:* | 2.4.6 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:2.4.7:*:*:*:*:*:*:* | 2.4.7 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:2.4.8:*:*:*:*:*:*:* | 2.4.8 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:2.4.9:*:*:*:*:*:*:* | 2.4.9 | Vulnerable | Apache |
| cpe:2.3:o:microsoft:windows:*:*:*:*:*:*:*:* | all versions | Running on | Microsoft |
- cpe:2.3:a:apache:http_server:2.4.1:*:*:*:*:*:*:* Versions 2.4.1 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:2.4.2:*:*:*:*:*:*:* Versions 2.4.2 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:2.4.3:*:*:*:*:*:*:* Versions 2.4.3 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:2.4.4:*:*:*:*:*:*:* Versions 2.4.4 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:2.4.6:*:*:*:*:*:*:* Versions 2.4.6 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:2.4.7:*:*:*:*:*:*:* Versions 2.4.7 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:2.4.8:*:*:*:*:*:*:* Versions 2.4.8 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:2.4.9:*:*:*:*:*:*:* Versions 2.4.9 Vulnerable ·Apache
- cpe:2.3:o:microsoft:windows:*:*:*:*:*:*:*:* Versions all versions Running on ·Microsoft
Remediation
Red Hat 1 advisory
- RHSA-2016:2957 Released 2016-12-15 · Red Hat rating ImportantRed Hat JBoss Core Services Apache HTTP 2.4.23 Release
- Red Hat JBoss Core Services
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat JBoss Core Services | Fixed | RHSA-2016:2957 |
Not affected: 9 products
- Red Hat Directory Server 8
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat JBoss Enterprise Application Platform 5
- Red Hat JBoss Enterprise Application Platform 6
- Red Hat JBoss Enterprise Web Server 1
- Red Hat JBoss Enterprise Web Server 2
- Red Hat Software Collections
Timeline
- 2026-10-02 Threatist record created from CVE-2014-3523
- 2026-10-03 Alias added: GHSA-jvhm-2h34-2h38
- 2026-11-06 Priority changed: LOW → MEDIUM
References
Advisory 3
Other 16
- http://svn.apache.org/viewvc/httpd/httpd/trunk/server/mpm/winnt/child.c?r1=1608785&r2=1610652&diff_format=h
- http://svn.apache.org/viewvc/httpd/httpd/trunk/server/mpm/winnt/child.c
- [httpd-cvs] 20190815 svn commit: r1048743 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
- [httpd-cvs] 20190815 svn commit: r1048742 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
- [httpd-cvs] 20200401 svn commit: r1058586 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
- [httpd-cvs] 20200401 svn commit: r1058587 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
- [httpd-cvs] 20210330 svn commit: r1073139 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/json/
- [httpd-cvs] 20210330 svn commit: r1073139 [9/13] - in /websites/staging/httpd/trunk/content: ./ security/json/
- [httpd-cvs] 20210330 svn commit: r1073140 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/cvejsontohtml.py security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
- [httpd-cvs] 20210330 svn commit: r1888194 [9/13] - /httpd/site/trunk/content/security/json/
- [httpd-cvs] 20210330 svn commit: r1073149 [9/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/
- [httpd-cvs] 20210330 svn commit: r1073149 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/
- [httpd-cvs] 20210330 svn commit: r1073146 [3/3] - in /websites/staging/httpd/trunk/content: ./ security/cvejsontohtml.py security/vulnerabilities-httpd.xml security/vulnerabilities_22.html security/vulnerabilities_24.html
- [httpd-cvs] 20210603 svn commit: r1075360 [3/3] - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2021-31618.json security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
- [httpd-cvs] 20210606 svn commit: r1075467 [2/2] - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2021-31618.json security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
- [httpd-cvs] 20210606 svn commit: r1075470 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2020-13938.json security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
More Apache Http Server vulnerabilities
- TI-2021-18535 Path Traversal and Remote Code Execution in Apache HTTP Server 2.4.49 and 2.4.50 (incomplete fix of CVE-2021-41773) KEVCVSS 3.1CRITICAL 9.8
- TI-2021-18417 Path traversal and file disclosure vulnerability in Apache HTTP Server 2.4.49 KEVCVSS 3.1CRITICAL 9.8
- TI-2024-25716 Apache HTTP Server weakness in mod_rewrite when first segment of substitution matches filesystem path. KEVCVSS 3.1CRITICAL 9.1
- TI-2021-17490 mod_proxy SSRF KEVCVSS 3.1CRITICAL 9.0
- TI-2019-00184 Use after free in Apache HTTP Server KEVCVSS 3.1HIGH 7.8
- TI-2009-03392 The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft… CVSS 3.1CRITICAL 9.8
Sources
- CVE-2014-3523 · CVE Program
- CVE-2014-3523 · NVD
- FIRST EPSS
- GHSA-jvhm-2h34-2h38 · GitHub Advisory Database · CC BY 4.0
- CVE-2014-3523 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences