Common Weakness Enumeration
CWE-195
AllowedSigned to Unsigned Conversion Error
Abstraction: Variant · Status: Draft
The product uses a signed primitive and performs a cast to an unsigned primitive, which can produce an unexpected value if the value of the signed primitive can not be represented using an unsigned primitive.
34 vulnerabilities reference this CWE, most recent first.
CVE-2022-43663 (GCVE-0-2022-43663)
Vulnerability from cvelistv5 – Published: 2023-03-20 20:16 – Updated: 2024-08-03 13:40
VLAI
EPSS
VEX
Summary
An integer conversion vulnerability exists in the SORBAx64.dll RecvPacket functionality of WellinTech KingHistorian 35.01.00.05. A specially crafted network packet can lead to a buffer overflow. An attacker can send a malicious packet to trigger this vulnerability.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-08-01 15:29 UTC
CWE
- CWE-195 - Signed to Unsigned Conversion Error
Assigner
talos
CNA
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| WellinTech | KingHistorian |
Affected:
35.01.00.05
|
|
| wellintech | kinghistorian |
Affected:
35.01.00.05
cpe:2.3:a:wellintech:kinghistorian:35.01.00.05:*:*:*:*:*:*:* |
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CVE-2020-6096 (GCVE-0-2020-6096)
Vulnerability from cvelistv5 – Published: 2020-04-01 00:00 – Updated: 2026-10-14 08:06
VLAI
EPSS
VEX
Summary
An exploitable signed comparison vulnerability exists in the ARMv7 memcpy() implementation of GNU glibc 2.30.9000. Calling memcpy() (on ARMv7 targets that utilize the GNU glibc implementation) with a negative value for the 'num' parameter results in a signed comparison vulnerability. If an attacker underflows the 'num' parameter to memcpy(), this vulnerability could lead to undefined behavior such as writing to out-of-bounds memory and potentially remote code execution. Furthermore, this memcpy() implementation allows for program execution to continue in scenarios where a segmentation fault or crash should have occurred. The dangers occur in that subsequent execution and iterations of this code will be executed with this corrupted data.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-13 20:06 UTC
CWE
- CWE-195 - Signed to Unsigned Conversion Error
Assigner
talos
CNA
References
8 references
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | GNU glibc |
Affected:
2.30.9000
|
|
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.0 , < V3.1.5
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.0 , < V3.1.5
(custom)
|
|
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.0 , < V3.1.5
(custom)
|
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CVE-2020-1913 (GCVE-0-2020-1913)
Vulnerability from cvelistv5 – Published: 2020-09-09 19:00 – Updated: 2024-08-04 06:53
VLAI
EPSS
VEX
Summary
An Integer signedness error in the JavaScript Interpreter in Facebook Hermes prior to commit 2c7af7ec481ceffd0d14ce2d7c045e475fd71dc6 allows attackers to cause a denial of service attack or a potential RCE via crafted JavaScript. Note that this is only exploitable if the application using Hermes permits evaluation of untrusted JavaScript. Hence, most React Native applications are not affected.
Severity
No CVSS data available.
CWE
- CWE-195 - Signed to Unsigned Conversion Error
Assigner
facebook
CNA
References
2 references
| URL | Tags |
|---|---|
| https://www.facebook.com/security/advisories/cve-… | x_refsource_CONFIRM |
| https://github.com/facebook/hermes/commit/2c7af7e… | x_refsource_CONFIRM |
Impacted products
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CVE-2016-6560 (GCVE-0-2016-6560)
Vulnerability from cvelistv5 – Published: 2017-03-31 19:00 – Updated: 2024-08-06 01:36
VLAI
EPSS
VEX
Summary
illumos osnet-incorporation bcopy() and bzero() implementations make signed instead of unsigned comparisons allowing a system crash.
Severity
No CVSS data available.
CWE
- CWE-195 - Signed to Unsigned Conversion Error
Assigner
certcc
CNA
References
3 references
| URL | Tags |
|---|---|
| https://www.illumos.org/issues/7488 | x_refsource_CONFIRM |
| https://github.com/illumos/illumos-gate/commit/5a… | x_refsource_CONFIRM |
| https://www.openindiana.org/2016/11/01/cve-2016-6… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| illumos | osnet-incorporation |
Affected:
proir to osnet-incorporation@0.5.11,5.11-2016.0.1.15933
|
Date Public
2016-11-01 00:00
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No mitigation information available for this CWE.
No CAPEC attack patterns related to this CWE.