Common Weakness Enumeration
CWE-755
DiscouragedImproper Handling of Exceptional Conditions
Abstraction: Class · Status: Incomplete
The product does not handle or incorrectly handles an exceptional condition.
238 vulnerabilities reference this CWE, most recent first.
CVE-2026-94639 (GCVE-0-2026-94639)
Vulnerability from cvelistv5 – Published: 2026-10-02 09:33 – Updated: 2026-10-05 16:18
VLAI
EPSS
VEX
Title
Apache Thrift: Java `TSaslNonblockingServer`: residual of CVE-2026-61373 (thread-death black hole + no cross-connection budget)
Summary
improper handling of exceptional conditions, Allocation of resources without limits or throttling, Uncaught exception vulnerability in Apache Thrift Java bindings.
This issue affects Apache Thrift: before 0.25.0.
Users are recommended to upgrade to version 0.25.0, which fixes the issue.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-05 16:17 UTC
CWE
Assigner
apache
CNA
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/33otcgbqd27wf6qq8… | vendor-advisory |
| https://lists.apache.org/thread/5okpz47dv8hy0s3r6… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Thrift |
Affected:
0 , < 0.25.0
(semver)
|
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CVE-2026-90440 (GCVE-0-2026-90440)
Vulnerability from cvelistv5 – Published: 2026-10-02 11:44 – Updated: 2026-10-02 13:55
VLAI
EPSS
VEX
Title
Apache Thrift: An exception escaping a libevent callback stops the D library's non-blocking server, allowing an unauthenticated remote attacker to deny service
Summary
Uncaught exception, improper handling of exceptional conditions, improper resource shutdown vulnerability in Apache Thrift D thrift.server.nonblocking.TNonblockingServer.
This issue affects Apache Thrift: before 0.25.0.
Users are recommended to upgrade to version 0.25.0, which fixes the issue.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 13:55 UTC
CWE
Assigner
apache
CNA
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/33otcgbqd27wf6qq8… | vendor-advisory |
| https://lists.apache.org/thread/s8fjltl6c1pkm7vg9… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Thrift |
Affected:
0 , < 0.25.0
(semver)
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CVE-2026-89025 (GCVE-0-2026-89025)
Vulnerability from cvelistv5 – Published: 2026-09-15 14:13 – Updated: 2026-10-01 15:21
VLAI
EPSS
VEX
Title
Hirschmann HiOS Switch Platform DoS via Malformed HTTP Request
Summary
Hirschmann HiOS Switch Platform devices contain a denial-of-service vulnerability in the integrated web server due to missing validation of HTTP(S) content. A remote unauthenticated attacker can send a specially crafted HTTP(S) request to a specific endpoint that is processed incorrectly, causing the device to perform an unintended reboot and resulting in a temporary denial-of-service condition. This vulnerability has been addressed in versions 07.1.12, 08.7.10, 09.0.13, 09.3.03, 10.3.08, and 10.5.00.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-15 14:48 UTC
CWE
- CWE-755 - Improper Handling of Exceptional Conditions
Assigner
VulnCheck
CNA
References
2 references
| URL | Tags |
|---|---|
| https://assets.belden.com/asset/2ba884e3-c0c9-40f… | vendor-advisorypatch |
| https://www.vulncheck.com/advisories/hirschmann-h… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Belden | Hirschmann HiOS Switch Platform |
Affected:
07.0.0 , ≤ 07.1.11
(custom)
Unaffected: 07.1.12 (custom) Affected: 08.0.0 , ≤ 08.7.09 (custom) Unaffected: 08.7.10 (custom) Affected: 09.0.00 , ≤ 09.0.12 (custom) Unaffected: 09.0.13 (custom) Affected: 09.3.00 , ≤ 09.3.02 (custom) Unaffected: 09.3.03 (custom) Affected: 10.0.0 , ≤ 10.3.07 (custom) Unaffected: 10.3.08 (custom) Affected: 10.4.00 (custom) Affected: 10.5.00 (custom) cpe:2.3:o:belden:hirschmann_hios:*:*:*:*:*:*:*:* cpe:2.3:o:belden:hirschmann_hios:*:*:*:*:*:*:*:* cpe:2.3:o:belden:hirschmann_hios:*:*:*:*:*:*:*:* cpe:2.3:o:belden:hirschmann_hios:*:*:*:*:*:*:*:* cpe:2.3:o:belden:hirschmann_hios:*:*:*:*:*:*:*:* cpe:2.3:o:belden:hirschmann_hios:10.4.00:*:*:*:*:*:*:* cpe:2.3:o:belden:hirschmann_hios:10.5.00:*:*:*:*:*:*:* |
Date Public
2026-09-09 00:00
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CVE-2026-81516 (GCVE-0-2026-81516)
Vulnerability from cvelistv5 – Published: 2026-09-17 15:38 – Updated: 2026-09-17 19:19
VLAI
EPSS
VEX
Title
Steeltoe.Discovery.Consul: malformed 'secure' metadata aborts service instance lookup (DoS)
Summary
Steeltoe is an open source project that provides a collection of libraries that helps users build cloud-native applications. From 4.0.0 until 4.3.0, ConsulDiscoveryClient constructs ConsulServiceInstance objects by parsing each registration's secure metadata with a strict Boolean conversion. A principal that can register a Consul service can supply a secure value other than true or false, causing the exception from one instance to abort construction of the entire instance list and make the targeted service undiscoverable. When GetAllInstancesAsync enumerates all services, one malformed instance can abort enumeration across every service. The outage persists until the offending registration is removed. This issue is fixed in version 4.3.0.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 17:06 UTC
CWE
- CWE-755 - Improper Handling of Exceptional Conditions
Assigner
GitHub_M
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/SteeltoeOSS/security-advisorie… | x_refsource_CONFIRM |
| https://github.com/SteeltoeOSS/Steeltoe/commit/02… | x_refsource_MISC |
| https://github.com/SteeltoeOSS/Steeltoe/releases/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SteeltoeOSS | security-advisories |
Affected:
>= 4.0.0, < 4.3.0
|
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CVE-2026-81515 (GCVE-0-2026-81515)
Vulnerability from cvelistv5 – Published: 2026-09-17 15:40 – Updated: 2026-09-21 20:50
VLAI
EPSS
VEX
Title
Steeltoe.Discovery.Eureka: malformed enum/bool/timestamp field aborts entire registry fetch (DoS)
Summary
Steeltoe is an open source project that provides a collection of libraries that helps users build cloud-native applications. From 4.0.0 until 4.3.0, EurekaDiscoveryClient deserializes the registry response as one unit, and an unrecognized actionType or status, a non-Boolean isCoordinatingDiscoveryServer, or a nonnumeric timestamp can abort the entire response. A principal that can register or update an instance can cause all connected Steeltoe clients to receive an empty or stale instance list until the malformed registration is removed. The JsonInstanceInfoConverter, BoolStringJsonConverter, and LongStringJsonConverter parsing paths are affected. This issue is distinct from the earlier DataCenterInfo.name parsing vulnerability. This issue is fixed in version 4.3.0.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-21 20:50 UTC
CWE
- CWE-755 - Improper Handling of Exceptional Conditions
Assigner
GitHub_M
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/SteeltoeOSS/security-advisorie… | x_refsource_CONFIRM |
| https://github.com/SteeltoeOSS/Steeltoe/commit/bc… | x_refsource_MISC |
| https://github.com/SteeltoeOSS/Steeltoe/releases/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SteeltoeOSS | security-advisories |
Affected:
>= 4.0.0, < 4.3.0
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CVE-2026-72758 (GCVE-0-2026-72758)
Vulnerability from cvelistv5 – Published: 2026-10-26 17:07 – Updated: 2026-10-26 17:57
VLAI
EPSS
VEX
Title
Routinator may exit on malformed ranges
Summary
When parsing an AS range in Routinator, if the maximum value of the range is smaller than the minimum value of the range, Routinator will never reach the maximum value and run out of memory.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-26 17:46 UTC
CWE
- CWE-755 - Improper Handling of Exceptional Conditions
Assigner
NLnet Labs
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://www.nlnetlabs.nl/downloads/routinator/CVE… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| NLnet Labs | Routinator |
Unaffected:
0.15.3 , < *
(semver)
|
Date Public
2026-10-26 00:00
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CVE-2026-72757 (GCVE-0-2026-72757)
Vulnerability from cvelistv5 – Published: 2026-10-26 17:07 – Updated: 2026-10-26 17:57
VLAI
EPSS
VEX
Title
Routinator HTTP server becomes unavailable with many unclosed connections
Summary
Routinator runs out of open connections on the HTTP server when many connections are opened but never closed, leaving the HTTP server unavailable. This condition can be triggered maliciously by an attacker by opening a large number of connections to the HTTP server.
This only affects users that make their HTTP or RTR server available to untrusted networks.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-26 17:46 UTC
CWE
- CWE-755 - Improper Handling of Exceptional Conditions
Assigner
NLnet Labs
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://www.nlnetlabs.nl/downloads/routinator/CVE… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| NLnet Labs | Routinator |
Unaffected:
0.15.3 , < *
(semver)
|
Date Public
2026-10-26 00:00
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CVE-2026-72756 (GCVE-0-2026-72756)
Vulnerability from cvelistv5 – Published: 2026-10-26 17:06 – Updated: 2026-10-26 17:57
VLAI
EPSS
VEX
Title
Routinator exits on malformed rsync URIs
Summary
Routinator exits when an rsync URI for a file obtained over RRDP contains a path that cannot be stored on disk, such as too long file names, and folder names that overlap with existing file names.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-26 17:46 UTC
CWE
- CWE-755 - Improper Handling of Exceptional Conditions
Assigner
NLnet Labs
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://www.nlnetlabs.nl/downloads/routinator/CVE… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| NLnet Labs | Routinator |
Unaffected:
0.15.3 , < *
(semver)
|
Date Public
2026-10-26 00:00
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CVE-2026-72755 (GCVE-0-2026-72755)
Vulnerability from cvelistv5 – Published: 2026-10-26 17:06 – Updated: 2026-10-26 17:57
VLAI
EPSS
VEX
Title
Routinator stores TA certificate in cache without validation
Summary
Routinator stores a newly-retrieved TA certificate via HTTPS in cache without validation, potentially overwriting a known good TA certificate even if validation fails.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-26 17:46 UTC
CWE
- CWE-755 - Improper Handling of Exceptional Conditions
Assigner
NLnet Labs
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://www.nlnetlabs.nl/downloads/routinator/CVE… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| NLnet Labs | Routinator |
Unaffected:
0.15.3 , < *
(semver)
|
Date Public
2026-10-26 00:00
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CVE-2026-72754 (GCVE-0-2026-72754)
Vulnerability from cvelistv5 – Published: 2026-10-26 17:06 – Updated: 2026-10-26 17:57
VLAI
EPSS
VEX
Title
Routinator exits when parsing an incorrect or very large CRL file
Summary
When Routinator encounters a CRL with many entries, it may hang or run out of memory. If Routinator encounters a CRL file with the wrong encoding, it may exit.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-26 17:47 UTC
CWE
- CWE-755 - Improper Handling of Exceptional Conditions
Assigner
NLnet Labs
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://www.nlnetlabs.nl/downloads/routinator/CVE… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| NLnet Labs | Routinator |
Unaffected:
0.15.3 , < *
(semver)
|
Date Public
2026-10-26 00:00
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No mitigation information available for this CWE.
No CAPEC attack patterns related to this CWE.