CWE-754

Improper Check for Unusual or Exceptional Conditions

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.

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

Vulnerability from cvelistv5 – Published: 2026-05-19 06:31 – Updated: 2026-05-19 13:20
VLAI
Summary
Improper Check for Unusual or Exceptional Conditions vulnerability in Samsung Open Source Escargot allows Input Data Manipulation. This issue affects Escargot: 590345cc6258317c5da850d846ce6baaf2afc2d3.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
References
Impacted products
Vendor Product Version
Samsung Open Source Escargot Affected: 590345cc6258317c5da850d846ce6baaf2afc2d3
Create a notification for this product.
Show details on NVD website

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CVE-2026-4748 (GCVE-0-2026-4748)

Vulnerability from cvelistv5 – Published: 2026-04-01 06:18 – Updated: 2026-04-01 14:56
VLAI
Title
pf silently ignores certain rules
Summary
A regression in the way hashes were calculated caused rules containing the address range syntax (x.x.x.x - y.y.y.y) that only differ in the address range(s) involved to be silently dropped as duplicates. Only the first of such rules is actually loaded into pf. Ranges expressed using the address[/mask-bits] syntax were not affected. Some keywords representing actions taken on a packet-matching rule, such as 'log', 'return tll', or 'dnpipe', may suffer from the same issue. It is unlikely that users have such configurations, as these rules would always be redundant. Affected rules are silently ignored, which can lead to unexpected behaviour including over- and underblocking.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-480 - Use of Incorrect Operator
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
  • CWE-1023 - Incomplete Comparison with Missing Factors
Assigner
References
Impacted products
Vendor Product Version
FreeBSD FreeBSD Affected: 15.0-RELEASE , < p5 (release)
Affected: 14.4-RELEASE , < p1 (release)
Affected: 14.3-RELEASE , < p10 (release)
Create a notification for this product.
Date Public
2026-03-26 05:00
Credits
Michael Gmelin
Show details on NVD website

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CVE-2026-4915 (GCVE-0-2026-4915)

Vulnerability from cvelistv5 – Published: 2026-05-25 07:10 – Updated: 2026-05-26 14:43
VLAI
Title
Server panic via outgoing webhook responses
Summary
Mattermost versions 11.6.x <= 11.6.0, 11.5.x <= 11.5.3, 11.4.x <= 11.4.4, 10.11.x <= 10.11.14 fail to filter nil elements from outgoing webhook attachment payloads before processing, which allows an authenticated user to cause a denial of service (server process termination) via a crafted webhook callback response containing a null attachment entry.. Mattermost Advisory ID: MMSA-2026-00641
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
URL Tags
https://mattermost.com/security-updates vendor-advisory
Impacted products
Vendor Product Version
Mattermost Mattermost Affected: 11.6.0 , ≤ 11.6.0 (semver)
Affected: 11.5.0 , ≤ 11.5.3 (semver)
Affected: 11.4.0 , ≤ 11.4.4 (semver)
Affected: 10.11.0 , ≤ 10.11.14 (semver)
Unaffected: 11.7.0
Unaffected: 11.6.1
Unaffected: 11.5.4
Unaffected: 11.4.5
Unaffected: 10.11.15
Create a notification for this product.
Credits
daw10
Show details on NVD website

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

Vulnerability from cvelistv5 – Published: 2026-05-29 12:39 – Updated: 2026-05-29 15:26
VLAI
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.
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
References
URL Tags
https://cwe.mitre.org/data/definitions/440.html technical-description
Impacted products
Date Public
2026-05-29 15:00
Credits
Scott Sheahan, Rustic Security LLC
Show details on NVD website

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CVE-2026-49317 (GCVE-0-2026-49317)

Vulnerability from cvelistv5 – Published: 2026-05-29 12:42 – Updated: 2026-05-29 15:26
VLAI
Title
Indian Scout Bobber 2025 Infotainment Digital Round skips PIN entry when WCM is silent at boot
Summary
Incorrect behavior order in the Infotainment / Digital Round display of the Indian Motorcycle Scout Bobber + Tech 2025 model year allows an adjacent-network attacker to bypass the PIN entry screen. The Infotainment uses presence of Wireless Control Module (WCM) traffic during its boot window as a proxy for whether an immobilizer is fitted; if no WCM messages are observed, it skips the PIN entry screen and shows the normal user interface. An attacker who silences the WCM during the boot window — for example via a separately tracked CAN bus-off technique — can present a fully unlocked Infotainment despite the PIN never being entered. Specific timing and protocol details have been withheld pending vendor remediation.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-696 - Incorrect Behavior Order
  • CWE-636 - Not Failing Securely ('Failing Open')
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
URL Tags
https://cwe.mitre.org/data/definitions/696.html technical-description
Impacted products
Credits
Scott Sheahan, Rustic Security LLC
Show details on NVD website

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CVE-2026-49318 (GCVE-0-2026-49318)

Vulnerability from cvelistv5 – Published: 2026-05-29 13:18 – Updated: 2026-05-29 14:07
VLAI
Title
Indian Scout Bobber 2025 Infotainment Digital Round skips PIN entry when WCM is silent at boot
Summary
Incorrect behavior order in the Infotainment / Digital Round display of the Indian Motorcycle Scout Bobber + Tech 2025 model year allows an adjacent-network attacker to bypass the PIN entry screen. The Infotainment uses presence of Wireless Control Module (WCM) traffic during its boot window as a proxy for whether an immobilizer is fitted; if no WCM messages are observed, it skips the PIN entry screen and shows the normal user interface. An attacker who silences the WCM during the boot window — for example via a separately tracked CAN bus-off technique — can present a fully unlocked Infotainment despite the PIN never being entered. Specific timing and protocol details have been withheld pending vendor remediation.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-696 - Incorrect Behavior Order
  • CWE-636 - Not Failing Securely ('Failing Open')
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
URL Tags
https://cwe.mitre.org/data/definitions/696.html technical-description
Impacted products
Date Public
2026-05-29 15:00
Credits
Scott Sheahan, Rustic Security LLC
Show details on NVD website

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CVE-2026-49325 (GCVE-0-2026-49325)

Vulnerability from cvelistv5 – Published: 2026-05-29 12:37 – Updated: 2026-05-29 15:27
VLAI
Title
Indian Scout Bobber 2025 WCM voltage-based shutdown
Summary
Improper handling of physical conditions in the bike-shutdown control of the Indian Motorcycle Scout Bobber + Tech 2025 model year allows a physical attacker with access to the Wireless Control Module (WCM) wiring harness to bypass the anti-theft shutdown. The WCM signals shutdown to a peer ECU via a falling-edge voltage transition on a dedicated wire pair. The receiving ECU does not distinguish between an active shutdown pulse and an open-circuit / disconnected condition; interrupting the relevant wires leaves the motorcycle fully operable even though the WCM never validated the rider's PIN. Specific connector details have been withheld pending vendor remediation.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-1384 - Improper Handling of Physical or Environmental Conditions
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
  • CWE-693 - Protection Mechanism Failure
Assigner
References
URL Tags
https://cwe.mitre.org/data/definitions/1384.html technical-description
Impacted products
Date Public
2026-05-29 15:00
Credits
Scott Sheahan, Rustic Security LLC
Show details on NVD website

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CVE-2026-5343 (GCVE-0-2026-5343)

Vulnerability from cvelistv5 – Published: 2026-05-28 22:48 – Updated: 2026-05-29 18:38
VLAI
Title
SAML SSO - Service Provider - Critical - Authentication bypass - SA-CONTRIB-2026-031
Summary
Improper Check for Unusual or Exceptional Conditions vulnerability in Drupal SAML SSO - Service Provider allows Privilege Escalation. This issue affects SAML SSO - Service Provider: from 0.0.0 before 3.1.4.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
Impacted products
Vendor Product Version
Drupal SAML SSO - Service Provider Affected: 0.0.0 , < 3.1.4 (semver)
Create a notification for this product.
Date Public
2026-04-01 16:38
Credits
Tim de Jong | Freelance Drupal Developer (tim_dj) Sudhanshu Dhage (sudhanshu0542) Damien McKenna (damienmckenna) Greg Knaddison (greggles) Juraj Nemec (poker10) Jess (xjm)
Show details on NVD website

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CVE-2026-5946 (GCVE-0-2026-5946)

Vulnerability from cvelistv5 – Published: 2026-05-20 13:10 – Updated: 2026-05-20 13:40
VLAI
Title
Invalid handling of CLASS != IN
Summary
Multiple flaws have been identified in `named` related to the handling of DNS messages whose CLASS is not Internet (`IN`) — for example, `CHAOS` or `HESIOD`, or DNS messages that specify meta-classes (`ANY` or `NONE`) in the question section. Specially crafted requests reaching the affected code paths — recursion, dynamic updates (`UPDATE`), zone change notifications (`NOTIFY`), or processing of `IN`-specific record types in non-`IN` data — can cause assertion failures in `named`. This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-20 - Improper Input Validation
  • CWE-125 - Out-of-bounds Read
  • CWE-617 - Reachable Assertion
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
  • CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Assigner
isc
Impacted products
Vendor Product Version
ISC BIND 9 Affected: 9.11.0 , ≤ 9.16.50 (custom)
Affected: 9.18.0 , ≤ 9.18.48 (custom)
Affected: 9.20.0 , ≤ 9.20.22 (custom)
Affected: 9.21.0 , ≤ 9.21.21 (custom)
Affected: 9.11.3-S1 , ≤ 9.16.50-S1 (custom)
Affected: 9.18.11-S1 , ≤ 9.18.48-S1 (custom)
Affected: 9.20.9-S1 , ≤ 9.20.22-S1 (custom)
Create a notification for this product.
Date Public
2026-05-20 00:00
Credits
ISC would like to thank Mcsky23 for bringing this vulnerability to our attention.
Show details on NVD website

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CVE-2026-8491 (GCVE-0-2026-8491)

Vulnerability from cvelistv5 – Published: 2026-05-19 22:28 – Updated: 2026-05-20 16:36
VLAI
Title
Node View Permissions - Moderately critical - Access bypass - SA-CONTRIB-2026-034
Summary
Improper Check for Unusual or Exceptional Conditions vulnerability in Drupal Node View Permissions allows Forceful Browsing. This issue affects Node View Permissions: from 0.0.0 before 1.7.0, from 2.0.0 before 2.0.1.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
Impacted products
Vendor Product Version
Drupal Node View Permissions Affected: 0.0.0 , < 1.7.0 (semver)
Affected: 2.0.0 , < 2.0.1 (semver)
Create a notification for this product.
Date Public
2026-05-13 17:16
Credits
Adam Shepherd (adamps) Bálint Nagy (nagy.balint) Greg Knaddison (greggles) Juraj Nemec (poker10)
Show details on NVD website

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Mitigation ID: MIT-3

Phase: Requirements

Strategy: Language Selection

Description:

  • 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

Phase: Implementation

Description:

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

Phase: Implementation

Description:

  • 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 ID: MIT-39

Phase: Implementation

Description:

  • 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 ID: MIT-5

Phase: Implementation

Strategy: Input Validation

Description:

  • 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 ID: MIT-38

Phases: Architecture and Design, Implementation

Description:

  • 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

Phase: Architecture and Design

Description:

  • 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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