Common Weakness Enumeration
CWE-789
AllowedMemory Allocation with Excessive Size Value
Abstraction: Variant · Status: Draft
The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.
321 vulnerabilities reference this CWE, most recent first.
CVE-2026-20048 (GCVE-0-2026-20048)
Vulnerability from cvelistv5 – Published: 2026-02-25 16:26 – Updated: 2026-02-25 19:05
VLAI
EPSS
VEX
Title
Cisco NX-OS Software SNMP Denial of Service Vulnerability
Summary
A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco Nexus 9000 Series Fabric Switches in ACI mode could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.
This vulnerability is due to improper processing when parsing SNMP requests. An attacker could exploit this vulnerability by continuously sending SNMP queries to a specific MIB of an affected device. A successful exploit could allow the attacker to cause a kernel panic on the device, resulting in a reload and a DoS condition.
Note: This vulnerability affects SNMP versions 1, 2c, and 3. To exploit this vulnerability through SNMPv1 or SNMPv2c, the attacker must have a valid read-only SNMP community string for the affected system. To exploit this vulnerability through SNMPv3, the attacker must have valid SNMP user credentials for the affected system.
Severity
7.7 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-789 - Uncontrolled Memory Allocation
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco NX-OS System Software in ACI Mode |
Affected:
15.2(1g)
Affected: 15.2(2e) Affected: 15.2(2f) Affected: 15.2(2g) Affected: 15.2(2h) Affected: 15.2(3f) Affected: 15.2(3e) Affected: 15.2(3g) Affected: 15.2(4d) Affected: 15.2(4e) Affected: 15.2(5c) Affected: 15.2(5d) Affected: 16.0(1g) Affected: 15.2(5e) Affected: 15.2(4f) Affected: 15.2(6e) Affected: 15.2(6h) Affected: 16.0(1j) Affected: 15.2(6g) Affected: 15.2(7f) Affected: 15.2(7g) Affected: 16.0(2h) Affected: 15.2(8d) Affected: 16.0(2j) Affected: 15.2(8e) Affected: 16.0(3d) Affected: 16.0(3e) Affected: 15.2(8f) Affected: 15.2(8g) Affected: 15.3(1d) Affected: 15.2(8h) Affected: 16.0(4c) Affected: 15.3(2a) Affected: 15.2(8i) Affected: 16.0(5h) Affected: 15.3(2b) Affected: 16.0(3g) Affected: 16.0(5j) Affected: 15.3(2c) Affected: 16.0(6c) Affected: 15.3(2d) Affected: 16.1(1f) Affected: 16.0(7e) Affected: 16.0(8e) Affected: 15.3(2e) Affected: 16.0(8f) Affected: 16.1(2f) Affected: 16.1(2g) Affected: 15.3(2f) Affected: 16.0(9c) Affected: 16.1(3f) Affected: 16.0(9d) Affected: 16.0(6h) Affected: 16.0(8h) Affected: 16.1(3g) Affected: 16.0(9e) Affected: 16.1(4h) |
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CVE-2026-15053 (GCVE-0-2026-15053)
Vulnerability from cvelistv5 – Published: 2026-07-08 13:46 – Updated: 2026-07-08 14:27
VLAI
EPSS
VEX
Title
Tanium addressed a denial of service vulnerability in Tanium Server.
Summary
Tanium addressed a denial of service vulnerability in Tanium Server.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Tanium | Tanium Server |
Affected:
7.7.3.8298 , < 7.7.3.8298
(custom)
Affected: 7.8.2.1198 , < 7.8.2.1198 (custom) Affected: 7.8.4.1327 , < 7.8.4.1327 (custom) |
Date Public
2026-07-07 20:17
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CVE-2026-14684 (GCVE-0-2026-14684)
Vulnerability from cvelistv5 – Published: 2026-07-04 23:30 – Updated: 2026-07-06 16:50
VLAI
EPSS
VEX
Title
HdrHistogram AbstractHistogram.java memory allocation
Summary
A flaw has been found in HdrHistogram up to 2.2.2. This affects the function org.HdrHistogram.AbstractHistogram.decodeFromByteBuffer of the file src/main/java/org/HdrHistogram/AbstractHistogram.java. This manipulation of the argument numberOfSignificantValueDigits causes uncontrolled memory allocation. The attack can only be executed locally. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
6 references
| URL | Tags |
|---|---|
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| https://vuldb.com/cve/CVE-2026-14684 | third-party-advisory |
| https://vuldb.com/submit/846754 | third-party-advisory |
| https://github.com/HdrHistogram/HdrHistogram/issues/220 | exploitissue-tracking |
| https://github.com/HdrHistogram/HdrHistogram/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | HdrHistogram |
Affected:
2.2.0
Affected: 2.2.1 Affected: 2.2.2 cpe:2.3:a:hdrhistogram:hdrhistogram:*:*:*:*:*:*:*:* |
Credits
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CVE-2026-14683 (GCVE-0-2026-14683)
Vulnerability from cvelistv5 – Published: 2026-07-04 23:00 – Updated: 2026-07-07 02:37
VLAI
EPSS
VEX
Title
HdrHistogram AbstractHistogram.java memory allocation
Summary
A vulnerability was detected in HdrHistogram up to 2.2.2. Affected by this issue is the function org.HdrHistogram.AbstractHistogram.decodeFromCompressedByteBuffer of the file src/main/java/org/HdrHistogram/AbstractHistogram.java. The manipulation of the argument lengthOfCompressedContents results in uncontrolled memory allocation. The attack needs to be approached locally. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/376279 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/376279/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-14683 | third-party-advisory |
| https://vuldb.com/submit/846750 | third-party-advisory |
| https://vuldb.com/submit/846752 | third-party-advisory |
| https://github.com/HdrHistogram/HdrHistogram/issues/219 | exploitissue-tracking |
| https://github.com/HdrHistogram/HdrHistogram/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | HdrHistogram |
Affected:
2.2.0
Affected: 2.2.1 Affected: 2.2.2 cpe:2.3:a:hdrhistogram:hdrhistogram:*:*:*:*:*:*:*:* |
Credits
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CVE-2026-14454 (GCVE-0-2026-14454)
Vulnerability from cvelistv5 – Published: 2026-07-08 12:30 – Updated: 2026-07-09 14:41
VLAI
EPSS
VEX
Title
Imager versions before 1.033 for Perl treat unsigned EXIF IFD entry counts as signed
Summary
Imager versions before 1.033 for Perl treat unsigned EXIF IFD entry counts as signed.
Imager mishandled large EXIF IFD entry count values, treating them as negative numbers. This could lead to an attempt to allocate a block nearly the size of the address space, which fails and kills the process.
An attacker could craft an image with EXIF data that terminates a worker process.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
3 references
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CVE-2026-11946 (GCVE-0-2026-11946)
Vulnerability from cvelistv5 – Published: 2026-07-02 10:54 – Updated: 2026-07-02 12:15
VLAI
EPSS
VEX
Title
GetEndpoints Memory Exhaustion in open62541
Summary
An unauthenticated remote attacker can exhaust
server memory via the GetEndpoints Discovery Service in open62541. The
endpointUrl field of GetEndpointsRequest is not validated for length. An
attacker can declare an arbitrarily large string (up to ~4.09 GB via the UInt32
length field) delivered across intermediate chunks without ever sending the
final chunk. The server buffers all chunks in RAM indefinitely until the
SecureChannel times out. The attack is
pre-session and bypasses all encryption configurations.
The issue affects open62541: from 1.4.0 through 1.4.16, from 1.5.0 through 1.5.4, master.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
3 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| open62541 project / o6 Automation GmbH | open62541 |
Affected:
1.4.0 , ≤ 1.4.16
(semver)
Affected: 1.5.0 , ≤ 1.5.4 (semver) Affected: master (custom) |
Credits
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CVE-2026-10142 (GCVE-0-2026-10142)
Vulnerability from cvelistv5 – Published: 2026-06-10 20:13 – Updated: 2026-07-14 15:53
VLAI
EPSS
VEX
Title
kafka-python prior to 2.3.2 Denial of Service via Protocol Parser Frame Length
Summary
kafka-python prior to 2.3.2 contains a denial-of-service vulnerability in the protocol parser that allows a malicious broker or machine-in-the-middle attacker to exhaust memory or hang connections by sending a crafted 4-byte frame length value without bounds validation. Attackers can send a specially crafted frame length through the receive_bytes() function to trigger either a multi-gigabyte memory allocation or an uncaught ValueError that leaves the connection in a broken state, causing requests to hang and consumers to stop heartbeating until restart.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.vulncheck.com/advisories/kafka-python… | technical-descriptionthird-party-advisory |
| https://github.com/dpkp/kafka-python/pull/3019 | issue-tracking |
| https://github.com/dpkp/kafka-python/pull/3026 | issue-tracking |
| https://github.com/dpkp/kafka-python/commit/6e483… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Dana Powers | kafka-python |
Affected:
0 , < 2.3.2
(git)
|
Date Public
2026-06-10 00:00
Credits
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CVE-2026-9538 (GCVE-0-2026-9538)
Vulnerability from cvelistv5 – Published: 2026-05-26 00:18 – Updated: 2026-05-28 13:16
VLAI
EPSS
VEX
Title
Archive::Tar versions before 3.10 for Perl allow memory exhaustion via attacker controlled entry size field in tar header
Summary
Archive::Tar versions before 3.10 for Perl allow memory exhaustion via attacker controlled entry size field in tar header.
_read_tar() reads each entry's payload with $handle->read($$data, $block), where $block is derived from the entry's 12-byte size field in the tar header with no upper bound on that value.
A crafted header declaring a multi-gigabyte size causes Perl to allocate a scalar of that size.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
3 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| BINGOS | Archive::Tar |
Affected:
0 , < 3.10
(custom)
|
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CVE-2026-8485 (GCVE-0-2026-8485)
Vulnerability from cvelistv5 – Published: 2026-05-20 14:06 – Updated: 2026-05-20 14:24
VLAI
EPSS
VEX
Title
Uncontrolled Memory Allocation vulnerability in Progress Software MOVEit Automation
Summary
Uncontrolled Memory Allocation vulnerability in Progress Software MOVEit Automation allows Excessive Allocation.
This issue affects MOVEit Automation: before 2025.0.11, from 2025.1.0 before 2025.1.7.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-789 - Uncontrolled Memory Allocation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://docs.progress.com/bundle/moveit-automatio… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Progress Software | MOVEit Automation |
Affected:
0 , < 2025.0.11
(semver)
Affected: 2025.1.0 , < 2025.1.7 (semver) |
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CVE-2026-6340 (GCVE-0-2026-6340)
Vulnerability from cvelistv5 – Published: 2026-05-18 07:08 – Updated: 2026-05-18 12:43
VLAI
EPSS
VEX
Title
Memory Exhaustion via Malicious 7zip File Upload
Summary
Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 fail to validate 7zip archive structure before processing which allows an authenticated attacker to cause server memory exhaustion and denial of service via uploading a specially crafted 7zip file with excessive folder declarations.. Mattermost Advisory ID: MMSA-2026-00573
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://mattermost.com/security-updates | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
11.5.0 , ≤ 11.5.1
(semver)
Affected: 10.11.0 , ≤ 10.11.13 (semver) Affected: 11.4.0 , ≤ 11.4.3 (semver) Unaffected: 11.6.0 Unaffected: 11.5.2 Unaffected: 10.11.14 Unaffected: 11.4.4 |
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Mitigation
Implementation
Architecture and Design
Perform adequate input validation against any value that influences the amount of memory that is allocated. Define an appropriate strategy for handling requests that exceed the limit, and consider supporting a configuration option so that the administrator can extend the amount of memory to be used if necessary.
Mitigation
Operation
Run your program using system-provided resource limits for memory. This might still cause the program to crash or exit, but the impact to the rest of the system will be minimized.
No CAPEC attack patterns related to this CWE.