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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.

972 vulnerabilities reference this CWE, most recent first.

CVE-2025-59958 (GCVE-0-2025-59958)

Vulnerability from cvelistv5 – Published: 2025-10-09 15:44 – Updated: 2025-10-09 19:05
VLAI
Title
Junos OS Evolved: PTX Series: When a firewall filter rejects traffic these packets are erroneously sent to the RE
Summary
An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved on PTX Series allows an unauthenticated, network-based attacker to cause impact to confidentiality and availability. When an output firewall filter is configured with one or more terms where the action is 'reject', packets matching these terms are erroneously sent to the Routing Engine (RE) and further processed there. Processing of these packets will consume limited RE resources. Also responses from the RE back to the source of this traffic could reveal confidential information about the affected device. This issue only applies to firewall filters applied to WAN or revenue interfaces, so not the mgmt or lo0 interface of the routing-engine, nor any input filters. This issue affects Junos OS Evolved on PTX Series: * all versions before 22.4R3-EVO, * 23.2 versions before 23.2R2-EVO.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-09 19:05 UTC
CWE
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
References
Impacted products
Vendor Product Version
Juniper Networks Junos OS Evolved Affected: 0 , < 22.4R3-EVO (semver)
Affected: 23.2 , < 23.2R2-EVO (semver)
Create a notification for this product.
Date Public
2025-10-08 16:00
Show details on NVD website

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CVE-2025-58354 (GCVE-0-2025-58354)

Vulnerability from cvelistv5 – Published: 2025-09-23 21:08 – Updated: 2025-09-24 13:22
VLAI
Title
Kata Containers coco-tdx malicious host can circumvent initdata verification
Summary
Kata Containers is an open source project focusing on a standard implementation of lightweight Virtual Machines (VMs) that perform like containers. In Kata Containers versions from 3.20.0 and before, a malicious host can circumvent initdata verification. On TDX systems running confidential guests, a malicious host can selectively fail IO operations to skip initdata verification. This allows an attacker to launch arbitrary workloads while being able to attest successfully to Trustee impersonating any benign workload. This issue has been patched in Kata Containers version 3.21.0.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-09-24 13:21 UTC
CWE
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
References
Impacted products
Show details on NVD website

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CVE-2025-55035 (GCVE-0-2025-55035)

Vulnerability from cvelistv5 – Published: 2025-10-16 15:18 – Updated: 2025-10-16 16:28
VLAI
Title
Mattermost Desktop DoS when user has basic authentication server configured
Summary
Mattermost Desktop App versions <=5.13.0 fail to manage modals in the Mattermost Desktop App that stops a user with a server that uses basic authentication from accessing their server which allows an attacker that provides a malicious server to the user to deny use of the Desktop App via having the user configure the malicious server and forcing a modal popup that cannot be closed.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-16 16:27 UTC
CWE
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
References
Impacted products
Vendor Product Version
Mattermost Mattermost Affected: 0 , ≤ 5.0.13 (semver)
Unaffected: 5.13.1.0
Create a notification for this product.
Credits
Show details on NVD website

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CVE-2025-54463 (GCVE-0-2025-54463)

Vulnerability from cvelistv5 – Published: 2025-08-11 18:57 – Updated: 2025-08-11 19:39
VLAI
Title
Unexpected Input to Cloud Webhook endpoint Causes DoS in Mattermost Confluence Plugin
Summary
Mattermost Confluence Plugin version <1.5.0 fails to handle unexpected request body which allows attackers to crash the plugin via constant hit to server webhook endpoint with an invalid request body.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-08-11 19:38 UTC
CWE
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
References
Impacted products
Vendor Product Version
Mattermost Mattermost Confluence Plugin Affected: 0 , < 1.5.0 (semver)
Unaffected: 1.5.0
Create a notification for this product.
Show details on NVD website

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CVE-2025-54427 (GCVE-0-2025-54427)

Vulnerability from cvelistv5 – Published: 2025-07-28 20:20 – Updated: 2025-07-28 20:38
VLAI
Title
Polkadot Frontier contains missing `check_inherent` for `note_min_gas_price_target` inflates gas price
Summary
Polkadot Frontier is an Ethereum and EVM compatibility layer for Polkadot and Substrate. The extrinsic note_min_gas_price_target is an inherent extrinsic, meaning only the block producer can call it. To ensure correctness, the ProvideInherent trait should be implemented for each inherent, which includes the check_inherent call. This allows other nodes to verify if the input (in this case, the target value) is correct. However, prior to commit a754b3d, the check_inherent function has not been implemented for note_min_gas_price_target. This lets the block producer set the target value without verification. The target is then used to set the MinGasPrice, which has an upper and lower bound defined in the on_initialize hook. The block producer can set the target to the upper bound. Which also increases the upper and lower bounds for the next block. Over time, this could result in continuously raising the gas price, making contract execution too expensive and ineffective for users. An attacker could use this flaw to manipulate the gas price, potentially leading to significantly inflated transaction fees. Such manipulation could render contract execution prohibitively expensive for users, effectively resulting in a denial-of-service condition for the network. This is fixed in version a754b3d.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-07-28 20:37 UTC
CWE
  • CWE-682 - Incorrect Calculation
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
Impacted products
Vendor Product Version
polkadot-evm frontier Affected: < a754b3d
Create a notification for this product.
Show details on NVD website

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CVE-2025-53638 (GCVE-0-2025-53638)

Vulnerability from cvelistv5 – Published: 2025-07-17 17:54 – Updated: 2025-07-17 20:22
VLAI
Title
Solady lacks extcodesize validation on implementation in ERC4337Factory
Summary
Solady is software that provides Solidity snippets with APIs. Starting in version 0.0.125 and prior to version 0.1.24, when an account is deployed via a proxy, using regular Solidity to call its initialization function may result in a silent failure, if the initialization function does not return a `bool` or some other return data. This is because regular Solidity uses `extcodesize(proxy)` to decide if call succeeds. This is insufficient in the case when the proxy points to an empty implementation. Users should upgrade to Solady v0.1.24 or later to receive a patch. Deploy any affected implementations and their factories on new EVM chains as soon as possible.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-07-17 20:22 UTC
CWE
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
References
Impacted products
Vendor Product Version
Vectorized solady Affected: >= 0.0.125, < 0.1.24
Create a notification for this product.
Show details on NVD website

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CVE-2025-53514 (GCVE-0-2025-53514)

Vulnerability from cvelistv5 – Published: 2025-08-11 18:57 – Updated: 2025-08-11 19:36
VLAI
Title
Unexpected Input to Server Webhook endpoint Causes DoS in Mattermost Confluence Plugin
Summary
Mattermost Confluence Plugin version <1.5.0 fails to handle unexpected request body which allows attackers to crash the plugin via constant hit to server webhook endpoint with an invalid request body.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-08-11 19:36 UTC
CWE
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
References
Impacted products
Vendor Product Version
Mattermost Mattermost Confluence Plugin Affected: 0 , < 1.5.0 (semver)
Unaffected: 1.5.0
Create a notification for this product.
Show details on NVD website

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CVE-2025-53359 (GCVE-0-2025-53359)

Vulnerability from cvelistv5 – Published: 2025-07-02 15:55 – Updated: 2025-07-03 13:18
VLAI
Title
ethereum does not check transaction malleability for EIP-2930, EIP-1559 and EIP-7702 transactions
Summary
ethereum is a common ethereum structs for Rust. Prior to ethereum crate v0.18.0, signature malleability (according to EIP-2) was only checked for "legacy" transactions, but not for EIP-2930, EIP-1559 and EIP-7702 transactions. This is a specification deviation. The signature malleability itself is not a security issue and not as high of a risk if the ethereum crate is used on a single-implementation blockchain. This issue has been patched in version v0.18.0. A workaround for this issue involves manually checking transaction malleability outside of the crate, however upgrading is recommended.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-07-03 13:18 UTC
CWE
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
Impacted products
Vendor Product Version
rust-ethereum ethereum Affected: < 0.18.0
Create a notification for this product.
Show details on NVD website

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CVE-2025-52981 (GCVE-0-2025-52981)

Vulnerability from cvelistv5 – Published: 2025-07-11 15:08 – Updated: 2025-07-15 19:55
VLAI
Title
Junos OS: SRX Series: Sequence of specific PIM packets causes a flowd crash
Summary
An Improper Check for Unusual or Exceptional Conditions vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on SRX1600, SRX2300, SRX 4000 Series, and SRX5000 Series with SPC3 allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS). If a sequence of specific PIM packets is received, this will cause a flowd crash and restart. This issue affects Junos OS: * all versions before 21.2R3-S9, * 21.4 versions before 21.4R3-S11, * 22.2 versions before 22.2R3-S7, * 22.4 versions before 22.4R3-S6, * 23.2 versions before 23.2R2-S4, * 23.4 versions before 23.4R2-S4, * 24.2 versions before 24.2R2. This is a similar, but different vulnerability than the issue reported as CVE-2024-47503, published in JSA88133.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-07-11 16:05 UTC
CWE
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
References
Impacted products
Vendor Product Version
Juniper Networks Junos OS Affected: 0 , < 21.2R3-S9 (semver)
Affected: 21.4 , < 21.4R3-S11 (semver)
Affected: 22.2 , < 22.2R3-S7 (semver)
Affected: 22.4 , < 22.4R3-S6 (semver)
Affected: 23.2 , < 23.2R2-S4 (semver)
Affected: 23.4 , < 23.4R2-S4 (semver)
Affected: 24.2 , < 24.2R2 (semver)
Create a notification for this product.
Date Public
2025-07-09 16:00
Show details on NVD website

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CVE-2025-52931 (GCVE-0-2025-52931)

Vulnerability from cvelistv5 – Published: 2025-08-11 18:57 – Updated: 2025-08-11 19:36
VLAI
Title
Unexpected input to Update Channel Subscription endpoint causes DoS in Mattermost Confluence Plugin
Summary
Mattermost Confluence Plugin version <1.5.0 fails to handle unexpected request body which allows attackers to crash the plugin via constant hit to update channel subscription endpoint with an invalid request body.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-08-11 19:36 UTC
CWE
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
References
Impacted products
Vendor Product Version
Mattermost Mattermost Confluence Plugin Affected: 0 , < 1.5.0 (semver)
Unaffected: 1.5.0
Create a notification for this product.
Show details on NVD website

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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.