Common Weakness Enumeration
CWE-401
AllowedMissing Release of Memory after Effective Lifetime
Abstraction: Variant · Status: Draft
The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.
2228 vulnerabilities reference this CWE, most recent first.
CVE-2026-81563 (GCVE-0-2026-81563)
Vulnerability from cvelistv5 – Published: 2026-09-16 14:00 – Updated: 2026-09-17 17:47
VLAI
EPSS
VEX
Title
SVCB AliasMode additional-data error leaks qpcache references
Summary
A BIND resolver encountering an SVCB/HTTPS AliasMode record referencing 14 or more SVCB/HTTPS ServiceMode records may fail to properly deallocate internal resources. If this happens repeatedly, resource exhaustion will eventually prevent the resolver from performing new recursive lookups.
This issue affects BIND 9 versions 9.18.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.18.11-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 17:47 UTC
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-81563 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.29 | patch |
| https://downloads.isc.org/isc/bind9/9.21.26 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.18.0 , ≤ 9.18.50
(custom)
Affected: 9.20.0 , ≤ 9.20.27 (custom) Affected: 9.21.0 , ≤ 9.21.25 (custom) Affected: 9.18.11-S1 , ≤ 9.18.50-S1 (custom) Affected: 9.20.9-S1 , ≤ 9.20.27-S1 (custom) cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* |
Date Public
2026-09-16 00:00
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CVE-2026-79771 (GCVE-0-2026-79771)
Vulnerability from cvelistv5 – Published: 2026-08-25 15:16 – Updated: 2026-08-25 17:44
VLAI
EPSS
VEX
Title
Nokogiri before 1.19.3 Memory Leak via XSLT Transform
Summary
Nokogiri versions before 1.19.3 contain a memory leak in the XSLT Stylesheet transform method when processing Ruby strings containing null bytes. Attackers can exploit this by passing attacker-controlled input with null bytes to transform parameters, causing heap allocations to leak and enabling denial of service against long-running processes.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 17:43 UTC
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/sparklemotion/nokogiri/securit… | vendor-advisory |
| https://www.vulncheck.com/advisories/nokogiri-bef… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| sparklemotion | nokogiri |
Affected:
0 , < 1.19.3
(semver)
Unaffected: 1.19.3 (semver) cpe:2.3:a:nokogiri:nokogiri:*:*:*:*:*:*:*:* |
Date Public
2026-04-27 00:00
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CVE-2026-78131 (GCVE-0-2026-78131)
Vulnerability from cvelistv5 – Published: 2026-09-11 01:45 – Updated: 2026-09-11 20:04
VLAI
EPSS
VEX
Summary
strongSwan 4.2.0 through 6.0.7 has a missing release of memory after its effective lifetime in the x509 plugin's attribute certificate parser.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-11 20:04 UTC
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| strongSwan | strongSwan |
Affected:
4.2.0 , < 6.1.0
(semver)
cpe:2.3:a:strongswan:strongswan:*:*:*:*:*:*:*:* |
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CVE-2026-78127 (GCVE-0-2026-78127)
Vulnerability from cvelistv5 – Published: 2026-09-11 01:37 – Updated: 2026-09-11 17:22
VLAI
EPSS
VEX
Summary
libcharon in strongSwan 4.1.2 through 6.0.7 has a missing release of memory after its effective lifetime in the IKE message parser.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-11 17:20 UTC
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| strongSwan | strongSwan |
Affected:
4.1.2 , < 6.1.0
(semver)
cpe:2.3:a:strongswan:strongswan:*:*:*:*:*:*:*:* |
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CVE-2026-78124 (GCVE-0-2026-78124)
Vulnerability from cvelistv5 – Published: 2026-09-11 01:30 – Updated: 2026-09-11 20:05
VLAI
EPSS
VEX
Summary
strongSwan 5.0.2 through 6.0.7 allows PKCS#7 certificate enumeration in the openssl plugin that leads to a lack of release of memory after its effective lifetime.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-11 20:05 UTC
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| strongSwan | strongSwan |
Affected:
5.0.2 , < 6.1.0
(semver)
cpe:2.3:a:strongswan:strongswan:*:*:*:*:*:*:*:* |
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CVE-2026-76235 (GCVE-0-2026-76235)
Vulnerability from cvelistv5 – Published: 2026-08-19 12:44 – Updated: 2026-08-25 01:50
VLAI
EPSS
VEX
Title
Cockpit-ws: cockpit: cockpit-ws: unauthenticated remote memory leak via cockpitlang cookie in send_login_html
Summary
A memory leak flaw was found in cockpit-ws. The login page handler leaks a heap allocation on every unauthenticated request that carries a CockpitLang cookie, allowing a remote unauthenticated attacker to exhaust memory on the host and cause a denial of service.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 01:50 UTC
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-76235 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2519497 | issue-trackingx_refsource_REDHAT |
Impacted products
5 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10
|
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7
|
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8
|
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9
|
|
| Red Hat | Red Hat OpenShift Dev Spaces |
cpe:/a:redhat:openshift_devspaces:3
|
Date Public
2026-08-19 00:00
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CVE-2026-73565 (GCVE-0-2026-73565)
Vulnerability from cvelistv5 – Published: 2026-08-13 17:37 – Updated: 2026-08-14 16:45
VLAI
EPSS
VEX
Title
@hono/node-server: Unauthenticated memory-leak DoS via aborted WebSocket handshake
Summary
@hono/node-server allows running the Hono application on Node.js. From 2.0.0 until 2.0.10, a WebSocket upgrade request to an upgradeWebSocket route with a missing or malformed Sec-WebSocket-Key header causes src/websocket.ts to retain the request's IncomingMessage in waiterMap and leave waitForWebSocket pending because ws.handleUpgrade emits no connection event. The aborted handshake therefore has no cleanup path, allowing an unauthenticated attacker to flood a public route, cause unbounded memory growth, and eventually make the service unavailable. This issue is fixed in version 2.0.10.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-14 16:45 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/honojs/node-server/security/ad… | x_refsource_CONFIRM |
| https://github.com/honojs/node-server/commit/3a21… | x_refsource_MISC |
| https://github.com/honojs/node-server/releases/ta… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| honojs | node-server |
Affected:
>= 2.0.0, < 2.0.10
|
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CVE-2026-73550 (GCVE-0-2026-73550)
Vulnerability from cvelistv5 – Published: 2026-09-21 19:49 – Updated: 2026-09-28 20:37
VLAI
EPSS
VEX
Title
Envoy: HTTP/2 Discarded Host Header 200 GB Header-Copy OOM in Envoy
Summary
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy copies every decoded HTTP/2 Host header value before discarding it when :authority is already present. The discarded value bypasses saveHeader, so its bytes and count are not charged against request header limits. An unauthenticated client can use HPACK indexing to submit many references to a large Host value across a bounded number of streams, forcing extreme header-copy allocation and causing the proxy to be out-of-memory killed. The relevant scope boundary is that the demonstrated amplification uses HTTP/2 HPACK and the duplicate Host discard behavior. This issue is fixed in versions 1.36.10, 1.37.6, 1.38.4, and 1.39.1.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-28 20:36 UTC
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://github.com/envoyproxy/envoy/security/advi… | x_refsource_CONFIRM |
| https://github.com/envoyproxy/envoy/commit/091099… | x_refsource_MISC |
| https://github.com/envoyproxy/envoy/commit/1fec99… | x_refsource_MISC |
| https://github.com/envoyproxy/envoy/commit/3fd0ff… | x_refsource_MISC |
| https://github.com/envoyproxy/envoy/commit/fc75d8… | x_refsource_MISC |
| https://github.com/envoyproxy/envoy/releases/tag/… | x_refsource_MISC |
| https://github.com/envoyproxy/envoy/releases/tag/… | x_refsource_MISC |
| https://github.com/envoyproxy/envoy/releases/tag/… | x_refsource_MISC |
| https://github.com/envoyproxy/envoy/releases/tag/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| envoyproxy | envoy |
Affected:
< 1.36.10
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"value": "Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy copies every decoded HTTP/2 Host header value before discarding it when :authority is already present. The discarded value bypasses saveHeader, so its bytes and count are not charged against request header limits. An unauthenticated client can use HPACK indexing to submit many references to a large Host value across a bounded number of streams, forcing extreme header-copy allocation and causing the proxy to be out-of-memory killed. The relevant scope boundary is that the demonstrated amplification uses HTTP/2 HPACK and the duplicate Host discard behavior. This issue is fixed in versions 1.36.10, 1.37.6, 1.38.4, and 1.39.1."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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}
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"description": "CWE-401: Missing Release of Memory after Effective Lifetime",
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"type": "CWE"
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
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"name": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-qgf6-qvhw-4hvh",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-qgf6-qvhw-4hvh"
},
{
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},
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},
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],
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},
{
"name": "https://github.com/envoyproxy/envoy/releases/tag/v1.36.10",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/envoyproxy/envoy/releases/tag/v1.36.10"
},
{
"name": "https://github.com/envoyproxy/envoy/releases/tag/v1.37.6",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/envoyproxy/envoy/releases/tag/v1.37.6"
},
{
"name": "https://github.com/envoyproxy/envoy/releases/tag/v1.38.4",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/envoyproxy/envoy/releases/tag/v1.38.4"
},
{
"name": "https://github.com/envoyproxy/envoy/releases/tag/v1.39.1",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/envoyproxy/envoy/releases/tag/v1.39.1"
}
],
"source": {
"advisory": "GHSA-qgf6-qvhw-4hvh",
"discovery": "UNKNOWN"
},
"title": "Envoy: HTTP/2 Discarded Host Header 200 GB Header-Copy OOM in Envoy"
}
},
"cveMetadata": {
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"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-73550",
"datePublished": "2026-09-21T19:49:28.641Z",
"dateReserved": "2026-08-12T20:53:46.379Z",
"dateUpdated": "2026-09-28T20:37:02.865Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-70155 (GCVE-0-2026-70155)
Vulnerability from cvelistv5 – Published: 2026-10-13 18:59 – Updated: 2026-10-16 23:15
VLAI
EPSS
VEX
Title
Windows DNS Denial of Service Vulnerability
Summary
Missing release of memory after effective lifetime in Windows DNS allows an unauthorized attacker to deny service over a network.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-13 20:55 UTC
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
13 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 1607 |
Affected:
10.0.14393.0 , < 10.0.14393.9612
(custom)
|
|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < 10.0.17763.9376
(custom)
|
|
| Microsoft | Windows Server 2012 |
Affected:
6.2.9200.0 , < 6.2.9200.26434
(custom)
|
|
| Microsoft | Windows Server 2012 (Server Core installation) |
Affected:
6.2.9200.0 , < 6.2.9200.26434
(custom)
|
|
| Microsoft | Windows Server 2012 R2 |
Affected:
6.3.9600.0 , < 6.3.9600.23470
(custom)
|
|
| Microsoft | Windows Server 2012 R2 (Server Core installation) |
Affected:
6.3.9600.0 , < 6.3.9600.23470
(custom)
|
|
| Microsoft | Windows Server 2016 |
Affected:
10.0.14393.0 , < 10.0.14393.9612
(custom)
|
|
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.14393.0 , < 10.0.14393.9612
(custom)
|
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.9376
(custom)
|
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.9376
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.5761
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.33650
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.33650
(custom)
|
Date Public
2026-10-13 14:00
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"product": "Windows Server 2025",
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],
"title": "Windows DNS Denial of Service Vulnerability"
}
},
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"dateUpdated": "2026-10-16T23:15:39.551Z",
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CVE-2026-70065 (GCVE-0-2026-70065)
Vulnerability from cvelistv5 – Published: 2026-09-08 17:14 – Updated: 2026-10-14 23:09
VLAI
EPSS
VEX
Title
Windows DHCP Server Denial of Service Vulnerability
Summary
Missing release of memory after effective lifetime in Windows DHCP Server allows an unauthorized attacker to deny service over a network.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 18:56 UTC
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
13 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 1607 |
Affected:
10.0.14393.0 , < 10.0.14393.9512
(custom)
|
|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < 10.0.17763.9245
(custom)
|
|
| Microsoft | Windows Server 2012 |
Affected:
6.2.9200.0 , < 6.2.9200.26349
(custom)
|
|
| Microsoft | Windows Server 2012 (Server Core installation) |
Affected:
6.2.9200.0 , < 6.2.9200.26349
(custom)
|
|
| Microsoft | Windows Server 2012 R2 |
Affected:
6.3.9600.0 , < 6.3.9600.23398
(custom)
|
|
| Microsoft | Windows Server 2012 R2 (Server Core installation) |
Affected:
6.3.9600.0 , < 6.3.9600.23398
(custom)
|
|
| Microsoft | Windows Server 2016 |
Affected:
10.0.14393.0 , < 10.0.14393.9512
(custom)
|
|
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.14393.0 , < 10.0.14393.9512
(custom)
|
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.9245
(custom)
|
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.9245
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.5622
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.33438
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.33438
(custom)
|
Date Public
2026-09-08 14:00
{
"containers": {
"adp": [
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"product": "Windows 10 Version 1607",
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"datePublic": "2026-09-08T14:00:00.000Z",
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"dateUpdated": "2026-10-14T23:09:17.432Z",
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Mitigation MIT-41
Implementation
Strategy: Libraries or Frameworks
- Choose a language or tool that provides automatic memory management, or makes manual memory management less error-prone.
- For example, glibc in Linux provides protection against free of invalid pointers.
- When using Xcode to target OS X or iOS, enable automatic reference counting (ARC) [REF-391].
- To help correctly and consistently manage memory when programming in C++, consider using a smart pointer class such as std::auto_ptr (defined by ISO/IEC ISO/IEC 14882:2003), std::shared_ptr and std::unique_ptr (specified by an upcoming revision of the C++ standard, informally referred to as C++ 1x), or equivalent solutions such as Boost.
Mitigation
Architecture and Design
Use an abstraction library to abstract away risky APIs. Not a complete solution.
Mitigation
Architecture and Design
Build and Compilation
Consider using the Boehm-Demers-Weiser garbage collector (bdwgc), which can help avoid leaks.
No CAPEC attack patterns related to this CWE.