Common Weakness Enumeration
CWE-457
AllowedUse of Uninitialized Variable
Abstraction: Variant · Status: Draft
The code uses a variable that has not been initialized, leading to unpredictable or unintended results.
363 vulnerabilities reference this CWE, most recent first.
CVE-2026-55990 (GCVE-0-2026-55990)
Vulnerability from cvelistv5 – Published: 2026-07-22 13:10 – Updated: 2026-07-22 14:04
VLAI
EPSS
VEX
Title
Packet of death for a DNSCrypt misconfigured Unbound
Summary
In NLnet Labs Unbound 1.7.0 up to and including 1.25.1, when the 'dnscrypt:' clause lists more 'dnscrypt-provider-cert:' files than there are matching 'dnscrypt-secret-key:' files, Unbound fills only the matched prefix and leaves the tail slots at the '0xdb' fill that libsodium's allocator writes into every allocation. Unbound would then iterate over the number of cert files, not the actual slots, so it walks into a slot with garbage data filled with '0xdb' bytes. Any unauthenticated client that sends one UDP datagram of ≥ 68 bytes whose first 8 bytes are '0xdb' to 'dnscrypt-port' will use that garbage entry which leads to a garbage dereference killing the server. This is a silent faulty configuration that goes unnoticed until triggered with the right client query. Unbound needs to be compiled with DNSCrypt support ('--enable-dnscrypt').
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-22 14:04 UTC
CWE
- CWE-457 - Use of Uninitialized Variable
Assigner
NLnet Labs
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://www.nlnetlabs.nl/downloads/unbound/CVE-20… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| NLnet Labs | Unbound |
Affected:
1.7.0 , < 1.25.2
(semver)
|
Date Public
2026-07-22 00:00
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CVE-2026-47336 (GCVE-0-2026-47336)
Vulnerability from cvelistv5 – Published: 2026-05-28 18:29 – Updated: 2026-05-28 19:23
VLAI
EPSS
VEX
Title
Use of uninitialized value in Ubuntu Linux AppArmor IPv4/IPv6 socket mediation rules
Summary
Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/AF_INET6 socket mediation code. The bug can be triggered by an unprivileged local user and could result in incorrect fine-grained mediation of network sockets.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-28 19:21 UTC
CWE
- CWE-457 - Use of uninitialized variable
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://git.launchpad.net/~ubuntu-kernel/ubuntu/+… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Canonical | Ubuntu Linux |
Affected:
6.8.0 , < 6.8.0-124.124
(dpkg)
|
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CVE-2026-47330 (GCVE-0-2026-47330)
Vulnerability from cvelistv5 – Published: 2026-05-28 18:27 – Updated: 2026-05-28 19:24
VLAI
EPSS
VEX
Title
Use of uninitialized value in Ubuntu Linux AppArmor notification handling
Summary
Ubuntu Linux 6.8, 7.17 and 7.0 contain AppArmor SAUCE patches which can, under certain circumstances, use an uninitialized variable in notification handling code. The bug can be triggered by an unprivileged local user and can result in the incorrect caching of AppArmor notification responses.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-28 19:19 UTC
CWE
- CWE-457 - Use of uninitialized variable
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://git.launchpad.net/~ubuntu-kernel/ubuntu/+… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Canonical | Ubuntu Linux |
Affected:
6.8.0 , < 6.8.0-124.124
(dpkg)
Affected: 6.17.0 , < 6.17.0-35.35 (dpkg) Affected: 7.0.0 , < 7.0.0-22.22 (dpkg) |
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CVE-2026-34608 (GCVE-0-2026-34608)
Vulnerability from cvelistv5 – Published: 2026-04-02 17:52 – Updated: 2026-04-02 19:10
VLAI
EPSS
VEX
Title
nanomq: Heap-Buffer-Overflow in webhook_inproc.c via cJSON_Parse OOB Read
Summary
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Severity
4.9 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-02 19:10 UTC
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/nanomq/nanomq/security/advisor… | x_refsource_CONFIRM |
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CVE-2026-22188 (GCVE-0-2026-22188)
Vulnerability from cvelistv5 – Published: 2026-01-07 20:26 – Updated: 2026-07-14 15:53
VLAI
EPSS
VEX
Title
Panda3D <= 1.10.16 Deploy-Stub Stack Exhaustion via Unbounded alloca()
Summary
The deploy-stub component in Panda3D versions up to and including 1.10.16 contains a denial of service vulnerability due to unbounded stack allocation. The deploy-stub executable allocates argv_copy and argv_copy2 using alloca() based directly on the attacker-controlled argc value without validation. Supplying a large number of command-line arguments can exhaust stack space and propagate uninitialized stack memory into Python interpreter initialization, resulting in a reliable crash and undefined behavior.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-07 21:23 UTC
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://seclists.org/fulldisclosure/2026/Jan/9 | technical-descriptionexploit |
| https://www.panda3d.org/ | product |
| https://github.com/panda3d/panda3d | product |
| https://www.vulncheck.com/advisories/panda3d-depl… | third-party-advisory |
Impacted products
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CVE-2026-21690 (GCVE-0-2026-21690)
Vulnerability from cvelistv5 – Published: 2026-01-07 21:50 – Updated: 2026-01-08 14:44
VLAI
EPSS
VEX
Title
iccDEV has Type Confusion in CIccTagXmlTagData::ToXml()
Summary
iccDEV provides a set of libraries and tools that allow for the interaction, manipulation, and application of International Color Consortium (ICC) color management profiles. Versions prior to 2.3.1.2 have a Type Confusion vulnerability in `CIccTagXmlTagData::ToXml()`. This vulnerability affects users of the iccDEV library who process ICC color profiles. Version 2.3.1.2 contains a patch. No known workarounds are available.
Severity
6.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-08 14:42 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/InternationalColorConsortium/i… | x_refsource_CONFIRM |
| https://github.com/InternationalColorConsortium/i… | x_refsource_MISC |
| https://github.com/InternationalColorConsortium/i… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| InternationalColorConsortium | iccDEV |
Affected:
< 2.3.1.2
|
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CVE-2026-20051 (GCVE-0-2026-20051)
Vulnerability from cvelistv5 – Published: 2026-02-25 16:14 – Updated: 2026-02-25 19:05
VLAI
EPSS
VEX
Title
Cisco Nexus 3600-R and 9500-R Series Switching Platforms Layer 2 Loop Denial of Service Vulnerability
Summary
A vulnerability with the Ethernet VPN (EVPN) Layer 2 ingress packet processing of Cisco Nexus 3600 Platform Switches and Cisco Nexus 9500-R Series Switching Platforms could allow an unauthenticated, adjacent attacker to trigger a Layer 2 traffic loop.
This vulnerability is due to a logic error when processing a crafted Layer 2 ingress frame. An attacker could exploit this vulnerability by sending a stream of crafted Ethernet frames through the targeted device. A successful exploit could allow the attacker to cause a Layer 2 Virtual eXtensible LAN (VxLAN) traffic loop, which, in turn, could result in a denial of service (DoS) condition. This Layer 2 loop could oversubscribe the bandwidth on network interfaces, which would result in all data plane traffic being dropped. To exploit this vulnerability, the attacker must be Layer 2-adjacent to the affected device.
Note: To stop active exploitation of this vulnerability, manual intervention is required to both stop the crafted traffic and flap all involved network interfaces. For additional assistance if a Layer 2 loop that is related to this vulnerability is suspected, contact the Cisco Technical Assistance Center (TAC) or the proper support provider.
Severity
7.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-25 18:18 UTC
CWE
- CWE-457 - Use of Uninitialized Variable
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco NX-OS Software |
Affected:
9.2(3)
Affected: 9.2(2v) Affected: 9.2(1) Affected: 9.2(2t) Affected: 9.2(3y) Affected: 9.3(2) Affected: 9.2(4) Affected: 9.3(1) Affected: 9.3(1z) Affected: 9.2(2) Affected: 9.3(3) Affected: 9.3(4) Affected: 9.3(5) Affected: 9.3(6) Affected: 9.3(5w) Affected: 9.3(7) Affected: 9.3(7k) Affected: 10.2(1) Affected: 9.3(7a) Affected: 9.3(8) Affected: 10.2(1q) Affected: 10.2(2) Affected: 9.3(9) Affected: 10.2(3) Affected: 10.2(3t) Affected: 9.3(10) Affected: 10.2(2a) Affected: 10.3(1) Affected: 10.2(4) Affected: 10.3(2) Affected: 9.3(11) Affected: 10.3(3) Affected: 10.2(5) Affected: 9.3(12) Affected: 10.2(3v) Affected: 10.4(1) Affected: 10.2(6) Affected: 10.3(3w) Affected: 10.3(3o) Affected: 10.3(4) Affected: 10.3(3p) Affected: 10.3(4a) Affected: 10.4(2) Affected: 10.3(3q) Affected: 9.3(13) Affected: 10.3(5) Affected: 10.2(7) Affected: 10.4(3) Affected: 10.3(3x) Affected: 10.3(4g) Affected: 10.5(1) Affected: 10.2(8) Affected: 10.3(3r) Affected: 10.3(6) Affected: 9.3(14) Affected: 10.4(4) Affected: 10.3(4h) Affected: 10.5(2) Affected: 10.3(7) Affected: 10.4(5) Affected: 10.5(3) Affected: 10.2(9) Affected: 9.3(15) Affected: 10.4(4g) Affected: 10.5(4) Affected: 10.6(1) Affected: 10.5(3t) Affected: 10.3(8) Affected: 10.4(6) Affected: 10.5(3s) Affected: 10.5(3e) Affected: 10.5(3o) Affected: 9.3(16) Affected: 10.6(1s) Affected: 10.5(3p) |
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CVE-2026-19492 (GCVE-0-2026-19492)
Vulnerability from cvelistv5 – Published: 2026-09-24 14:17 – Updated: 2026-09-24 14:50
VLAI
EPSS
VEX
Title
This Power System update is being released to address
Summary
IBM PowerVM Hypervisor FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, and FW1060.00 through FW1060.81 is affected by a vulnerability in a hypervisor call interface. An attacker with root access to a guest partition can read a limited amount of hypervisor memory, potentially exposing sensitive data belonging to the hypervisor or other guest partitions hosted on the same system, resulting in a confidentiality impact. The attacker has no control over which memory contents are returned. This vulnerability is of particular concern in multi-tenant environments where guests may run arbitrary OS images.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-24 14:50 UTC
CWE
- CWE-457 - Use of Uninitialized Variable
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.ibm.com/support/pages/node/7289137 | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| IBM | PowerVM Hypervisor |
Affected:
FW1120.00 , ≤ FW1120.01
(semver)
Affected: FW1110.00 , ≤ FW1110.31 (semver) Affected: FW1060.00 , ≤ FW1060.81 (semver) cpe:2.3:a:ibm:powervm_hypervisor:fw1120.00:*:*:*:*:*:*:* cpe:2.3:a:ibm:powervm_hypervisor:fw1120.00.0:*:*:*:*:*:*:* cpe:2.3:a:ibm:powervm_hypervisor:fw1120.01:*:*:*:*:*:*:* cpe:2.3:a:ibm:powervm_hypervisor:fw1120.01.0:*:*:*:*:*:*:* cpe:2.3:a:ibm:powervm_hypervisor:fw1110.00:*:*:*:*:*:*:* cpe:2.3:a:ibm:powervm_hypervisor:fw1110.00.0:*:*:*:*:*:*:* cpe:2.3:a:ibm:powervm_hypervisor:fw1110.31:*:*:*:*:*:*:* cpe:2.3:a:ibm:powervm_hypervisor:fw1110.31.0:*:*:*:*:*:*:* cpe:2.3:a:ibm:powervm_hypervisor:fw1060.00:*:*:*:*:*:*:* cpe:2.3:a:ibm:powervm_hypervisor:fw1060.00.0:*:*:*:*:*:*:* cpe:2.3:a:ibm:powervm_hypervisor:fw1060.81:*:*:*:*:*:*:* cpe:2.3:a:ibm:powervm_hypervisor:fw1060.81.0:*:*:*:*:*:*:* |
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CVE-2026-19212 (GCVE-0-2026-19212)
Vulnerability from cvelistv5 – Published: 2026-08-07 16:30 – Updated: 2026-08-08 02:58
VLAI
EPSS
VEX
Title
WonderTrader TraderATP Cash Trade Conversion WTSTradeDef.hpp uninitialized variable
Summary
A vulnerability was determined in WonderTrader up to 0.9.9. This impacts an unknown function of the file src/Includes/WTSTradeDef.hpp of the component TraderATP Cash Trade Conversion. Executing a manipulation of the argument m_offsetType can lead to use of uninitialized variable. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-08 02:58 UTC
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/386957 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/386957/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-19212 | third-party-advisory |
| https://vuldb.com/submit/864875 | third-party-advisory |
| https://my.feishu.cn/wiki/PyAuwg8Bwit3TBk5DgLc14G… | exploit |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | WonderTrader |
Affected:
0.9.0
Affected: 0.9.1 Affected: 0.9.2 Affected: 0.9.3 Affected: 0.9.4 Affected: 0.9.5 Affected: 0.9.6 Affected: 0.9.7 Affected: 0.9.8 Affected: 0.9.9 cpe:2.3:a:wondertrader:wondertrader:*:*:*:*:*:*:*:* |
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CVE-2026-18397 (GCVE-0-2026-18397)
Vulnerability from cvelistv5 – Published: 2026-10-01 21:49 – Updated: 2026-10-02 19:42
VLAI
EPSS
VEX
Title
SConnect: Native Host Unauthenticated Remote Code Execution Vulnerability
Summary
This vulnerability enables unauthenticated remote code execution (RCE) on a victim's machine by exploiting a combination of cryptographic weaknesses and memory management issues in the SConnect native host component.
The attack leverages an unrestricted messaging interface between an attacker-controlled web page and the native host, allowing malicious input to bypass security checks.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 19:40 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.thalesgroup.com/en/product-security-i… | vendor-advisory |
Impacted products
Date Public
2026-10-01 22:10
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"cna": {
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{
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"datePublic": "2026-10-01T22:10:00.000Z",
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Mitigation MIT-57
Implementation
Strategy: Attack Surface Reduction
Ensure that critical variables are initialized before first use [REF-1485].
Mitigation
Build and Compilation
Strategy: Compilation or Build Hardening
Most compilers will complain about the use of uninitialized variables if warnings are turned on.
Mitigation
Implementation
Operation
When using a language that does not require explicit declaration of variables, run or compile the software in a mode that reports undeclared or unknown variables. This may indicate the presence of a typographic error in the variable's name.
Mitigation
Requirements
Strategy: Language Selection
Choose a language that is not susceptible to these issues.
Mitigation
Architecture and Design
Mitigating technologies such as safe string libraries and container abstractions could be introduced.
No CAPEC attack patterns related to this CWE.