Common Weakness Enumeration

CWE-754

Allowed-with-Review

Improper Check for Unusual or Exceptional Conditions

Abstraction: Class · Status: Incomplete

The product does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the product.

905 vulnerabilities reference this CWE, most recent first.

CVE-2026-49316 (GCVE-0-2026-49316)

Vulnerability from cvelistv5 – Published: 2026-05-29 12:39 – Updated: 2026-06-27 08:47

Title

Indian Scout Bobber 2025 WCM CAN bus-off attack silently bypasses anti-theft shutdown

Summary

Expected behavior violation in the in-vehicle network of the Indian Motorcycle Scout Bobber + Tech 2025 model year allows an adjacent-network attacker to bypass the motorcycle's anti-theft shutdown by forcing the Wireless Control Module (WCM) into the CAN bus-off state. Using a well-known CAN error-frame injection technique against a periodic WCM transmission, the attacker drives the WCM CAN controller's transmit error counter past the bus-off threshold, after which the WCM stops transmitting all messages, including the shutdown command. Peer ECUs do not interpret WCM silence as a security event and continue normal operation, allowing the motorcycle to be operated despite the immobilizer never having been unlocked. Specific protocol details have been withheld pending vendor remediation.

Severity

4.6 (Medium)


                        
                          CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

4.1 (Medium)


                        
                          CVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-440 - Expected Behavior Violation
CWE-754 - Improper Check for Unusual or Exceptional Conditions
CWE-693 - Protection Mechanism Failure

Assigner

ASRG

References

1 reference

URL	Tags
https://cwe.mitre.org/data/definitions/440.html	technical-description

Impacted products

1 product

Vendor	Product	Version
Indian Motorcycle	Scout Bobber + Tech	Affected: 2025 (model-year)

Date Public

2026-05-29 15:00

Credits

Scott Sheahan, Rustic Security LLC

Show details on NVD website

JSON

To clipboard

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CVE-2026-47315 (GCVE-0-2026-47315)

Vulnerability from cvelistv5 – Published: 2026-05-19 06:31 – Updated: 2026-05-19 13:20

Summary

Improper Check for Unusual or Exceptional Conditions vulnerability in Samsung Open Source Escargot allows Input Data Manipulation. This issue affects Escargot: 590345cc6258317c5da850d846ce6baaf2afc2d3.

Severity

5.5 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-754 - Improper Check for Unusual or Exceptional Conditions

Assigner

samsung.tv_appliance

References

1 reference

URL	Tags
https://github.com/Samsung/escargot/pull/1565

Impacted products

1 product

Vendor	Product	Version
Samsung Open Source	Escargot	Affected: 590345cc6258317c5da850d846ce6baaf2afc2d3

Show details on NVD website

JSON

To clipboard

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CVE-2026-47216 (GCVE-0-2026-47216)

Vulnerability from cvelistv5 – Published: 2026-06-12 17:12 – Updated: 2026-06-12 20:19

Title

Typesense: Unauthenticated Denial of Service in the Typesense /multi_search Endpoint

Summary

Typesense is a fast, typo-tolerant search engine. Prior to versions 29.1 and 30.2, there is an unauthenticated denial-of-service vulnerability in the /multi_search endpoint. A specially crafted request can trigger an unhandled exception during request processing, causing the server process to terminate. This issue can be exploited over the network without authentication and results in service unavailability. The duration of impact may vary depending on system configuration and dataset size. This issue has been patched in versions 29.1 and 30.2.

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-754 - Improper Check for Unusual or Exceptional Conditions

Assigner

GitHub_M

References

1 reference

URL	Tags
https://github.com/typesense/typesense/security/a…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
typesense	typesense	Affected: < 29.1 Affected: >= 30.0, < 30.2

Show details on NVD website

JSON

To clipboard

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CVE-2026-46541 (GCVE-0-2026-46541)

Vulnerability from cvelistv5 – Published: 2026-06-09 23:45 – Updated: 2026-06-10 18:10

Title

Nimiq network-libp2p: DHT query poisoning via first-record verification failure

Summary

Nimiq is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.4.0, iIn handle_dht_get(), the DhtResults accumulator is only initialized when the first DHT record passes verification. If the first record fails (from a malicious DHT node), DhtResults is never created, and all subsequent valid records are discarded with "DHT inconsistent state" errors. This issue has been patched in version 1.4.0.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-754 - Improper Check for Unusual or Exceptional Conditions

Assigner

GitHub_M

References

3 references

URL	Tags
https://github.com/nimiq/core-rs-albatross/securi…	x_refsource_CONFIRM
https://github.com/nimiq/core-rs-albatross/pull/3707	x_refsource_MISC
https://github.com/nimiq/core-rs-albatross/releas…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
nimiq	core-rs-albatross	Affected: < 1.4.0

Show details on NVD website

JSON

To clipboard

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CVE-2026-45678 (GCVE-0-2026-45678)

Vulnerability from cvelistv5 – Published: 2026-06-02 15:24 – Updated: 2026-06-02 15:54

Title

OpenTelemetry eBPF Instrumentation: Postgres BIND parsing can panic on malformed payloads

Summary

OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. Prior to version 0.9.0, the Postgres protocol parser assumes BIND message payloads contain a valid NUL-terminated portal name. A crafted empty or unterminated payload can make OBI slice beyond the end of the captured buffer and panic. This issue has been patched in version 0.9.0.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-20 - Improper Input Validation
CWE-754 - Improper Check for Unusual or Exceptional Conditions

Assigner

GitHub_M

References

2 references

URL	Tags
https://github.com/open-telemetry/opentelemetry-e…	x_refsource_CONFIRM
https://github.com/open-telemetry/opentelemetry-e…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
open-telemetry	opentelemetry-ebpf-instrumentation	Affected: < 0.9.0

Show details on NVD website

JSON

To clipboard

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CVE-2026-44324 (GCVE-0-2026-44324)

Vulnerability from cvelistv5 – Published: 2026-05-27 15:44 – Updated: 2026-05-28 14:38

Title

free5GC: UDR nudr-dr DELETE amf-subscriptions panics on missing UE state via nil interface type assertion (single authenticated request)

Summary

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's UDR nudr-dr DELETE /subscription-data/{ueId}/{servingPlmnId}/ee-subscriptions/{subsId}/amf-subscriptions handler panics on a single authenticated request against a fresh UDR instance when the supplied ueId does not exist in UESubsCollection. The processor checks value, ok := udrSelf.UESubsCollection.Load(ueId) and sets a 404 USER_NOT_FOUND problem-details on the miss path, but execution continues and immediately runs value.(*udr_context.UESubsData) -- a Go type assertion on a nil interface, which panics with interface conversion: interface {} is nil, not *context.UESubsData. Gin recovery converts the panic into HTTP 500, but the endpoint remains repeatedly panicable. This vulnerability is fixed in 4.2.2.

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-704 - Incorrect Type Conversion or Cast
CWE-754 - Improper Check for Unusual or Exceptional Conditions

Assigner

GitHub_M

References

4 references

URL	Tags
https://github.com/free5gc/free5gc/security/advis…	x_refsource_CONFIRM
https://github.com/free5gc/free5gc/issues/920	x_refsource_MISC
https://github.com/free5gc/udr/pull/60	x_refsource_MISC
https://github.com/free5gc/udr/commit/8a1d3c63be9…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
free5gc	free5gc	Affected: < 4.2.2

Show details on NVD website

JSON

To clipboard

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CVE-2026-44322 (GCVE-0-2026-44322)

Vulnerability from cvelistv5 – Published: 2026-05-27 15:46 – Updated: 2026-05-28 14:42

Title

free5GC: NEF 3gpp-pfd-management PATCH applications/{appId} panics on UDR access failure due to nil ProblemDetails dereference

Summary

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF PATCH /3gpp-pfd-management/v1/{afId}/transactions/{transId}/applications/{appId} handler panics with a nil-pointer dereference when the upstream UDR call fails AND the consumer wrapper returns err != nil together with a nil *ProblemDetails. The handler's errPfdData != nil branch builds its own problemDetailsErr correctly, but immediately after it reads problemDetails.Cause (the OTHER value, which is nil in this branch) and panics. Gin recovery converts the panic into HTTP 500, so a single PATCH against this endpoint returns 500 instead of the intended controlled error response whenever UDR access is failing. This vulnerability is fixed in 4.2.2.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-476 - NULL Pointer Dereference
CWE-754 - Improper Check for Unusual or Exceptional Conditions

Assigner

GitHub_M

References

4 references

URL	Tags
https://github.com/free5gc/free5gc/security/advis…	x_refsource_CONFIRM
https://github.com/free5gc/free5gc/issues/925	x_refsource_MISC
https://github.com/free5gc/nef/pull/22	x_refsource_MISC
https://github.com/free5gc/nef/commit/72a47f3fab4…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
free5gc	free5gc	Affected: < 4.2.2

Show details on NVD website

JSON

To clipboard

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CVE-2026-44317 (GCVE-0-2026-44317)

Vulnerability from cvelistv5 – Published: 2026-05-27 15:50 – Updated: 2026-05-28 14:46

Title

free5GC: PCF npcf-policyauthorization POST /app-sessions panics on suppFeat=1 with missing AfRoutReq via nil pointer dereference

Summary

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's PCF POST /npcf-policyauthorization/v1/app-sessions handler panics on a single authenticated request whose ascReqData.suppFeat == "1" (enabling traffic-routing feature negotiation) and whose medComponents entries supply an afAppId but NO AfRoutReq. The create path then calls provisioningOfTrafficRoutingInfo(smPolicy, appID, routeReq, ...) with routeReq == nil and dereferences routeReq.RouteToLocs (and other fields) without a nil check, causing runtime error: invalid memory address or nil pointer dereference. Gin recovery converts the panic into HTTP 500. This vulnerability is fixed in 4.2.2.

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-476 - NULL Pointer Dereference
CWE-754 - Improper Check for Unusual or Exceptional Conditions

Assigner

GitHub_M

References

4 references

URL	Tags
https://github.com/free5gc/free5gc/security/advis…	x_refsource_CONFIRM
https://github.com/free5gc/free5gc/issues/879	x_refsource_MISC
https://github.com/free5gc/pcf/pull/65	x_refsource_MISC
https://github.com/free5gc/pcf/commit/508d70b8527…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
free5gc	free5gc	Affected: < 4.2.2

Show details on NVD website

JSON

To clipboard

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CVE-2026-44316 (GCVE-0-2026-44316)

Vulnerability from cvelistv5 – Published: 2026-05-27 15:52 – Updated: 2026-05-27 17:54

Title

free5GC: PCF npcf-smpolicycontrol POST /sm-policies panics on downstream UDR/OpenAPI 404 via nil pointer dereference

Summary

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's PCF POST /npcf-smpolicycontrol/v1/sm-policies handler (HandleCreateSmPolicyRequest) panics with a nil-pointer dereference when a downstream OpenAPI consumer call (UDR lookup) returns 404 Not Found and the consumer wrapper returns err != nil together with a nil response struct. The handler logs the OpenAPI error and continues executing instead of returning, then dereferences the nil response struct on a subsequent line and panics. Gin recovery converts the panic into HTTP 500, so a single attacker-shaped POST returns 500 instead of a clean 4xx whenever the downstream lookup fails. The PCF process keeps running. The trigger is a single POST containing input that causes the downstream UDR lookup to fail (e.g. an unknown DNN). In 4.2.1 this endpoint is also reachable WITHOUT an Authorization header because the PCF Npcf_SMPolicyControl route group is mounted without inbound auth middleware. This vulnerability is fixed in 4.2.2.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-476 - NULL Pointer Dereference
CWE-754 - Improper Check for Unusual or Exceptional Conditions

Assigner

GitHub_M

References

4 references

URL	Tags
https://github.com/free5gc/free5gc/security/advis…	x_refsource_CONFIRM
https://github.com/free5gc/free5gc/issues/803	x_refsource_MISC
https://github.com/free5gc/pcf/pull/62	x_refsource_MISC
https://github.com/free5gc/pcf/commit/df535f55243…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
free5gc	free5gc	Affected: < 4.2.2

Show details on NVD website

JSON

To clipboard

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CVE-2026-43928 (GCVE-0-2026-43928)

Vulnerability from cvelistv5 – Published: 2026-07-06 21:53 – Updated: 2026-07-07 13:39

Title

FOSSBilling: Payment amount not validated in PayPalEmail adapter allows invoice underpayment

Summary

FOSSBilling is a free, open-source billing and client management system. Prior to version 0.8.0, the PayPalEmail payment adapter accepts PayPal IPN callbacks and credits the IPN-supplied amount (`mc_gross`) to the client's balance without validating it against the invoice total. Combined with a $0.05 floating-point epsilon tolerance in the invoice credit-payment logic, this allows a client to underpay an invoice by up to $0.04 and still have it marked as fully paid. Version 0.8.0 patches the issue. There is no effective workaround without modifying the source code. Merchants using the PayPalEmail adapter should monitor IPN transactions for amounts that do not match their corresponding invoice totals, and manually review and refund suspicious payments.

Severity

2.3 (Low)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-754 - Improper Check for Unusual or Exceptional Conditions
CWE-1284 - Improper Validation of Specified Quantity in Input

Assigner

GitHub_M

References

1 reference

URL	Tags
https://github.com/FOSSBilling/FOSSBilling/securi…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
FOSSBilling	FOSSBilling	Affected: < 0.8.0

Show details on NVD website

JSON

To clipboard

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Mitigation MIT-3

Requirements

Strategy: Language Selection

Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
Choose languages with features such as exception handling that force the programmer to anticipate unusual conditions that may generate exceptions. Custom exceptions may need to be developed to handle unusual business-logic conditions. Be careful not to pass sensitive exceptions back to the user (CWE-209, CWE-248).

Mitigation

Implementation

Check the results of all functions that return a value and verify that the value is expected.

Mitigation

Implementation

If using exception handling, catch and throw specific exceptions instead of overly-general exceptions (CWE-396, CWE-397). Catch and handle exceptions as locally as possible so that exceptions do not propagate too far up the call stack (CWE-705). Avoid unchecked or uncaught exceptions where feasible (CWE-248).

Mitigation MIT-39

Implementation

Ensure that error messages only contain minimal details that are useful to the intended audience and no one else. The messages need to strike the balance between being too cryptic (which can confuse users) or being too detailed (which may reveal more than intended). The messages should not reveal the methods that were used to determine the error. Attackers can use detailed information to refine or optimize their original attack, thereby increasing their chances of success.
If errors must be captured in some detail, record them in log messages, but consider what could occur if the log messages can be viewed by attackers. Highly sensitive information such as passwords should never be saved to log files.
Avoid inconsistent messaging that might accidentally tip off an attacker about internal state, such as whether a user account exists or not.
Exposing additional information to a potential attacker in the context of an exceptional condition can help the attacker determine what attack vectors are most likely to succeed beyond DoS.

Mitigation MIT-5

Implementation

Strategy: Input Validation

Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.

Mitigation MIT-38

Architecture and Design Implementation

If the program must fail, ensure that it fails gracefully (fails closed). There may be a temptation to simply let the program fail poorly in cases such as low memory conditions, but an attacker may be able to assert control before the software has fully exited. Alternately, an uncontrolled failure could cause cascading problems with other downstream components; for example, the program could send a signal to a downstream process so the process immediately knows that a problem has occurred and has a better chance of recovery.

Mitigation

Architecture and Design

Use system limits, which should help to prevent resource exhaustion. However, the product should still handle low resource conditions since they may still occur.

No CAPEC attack patterns related to this CWE.

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