Common Weakness Enumeration

CWE-682

Weakness Discouraged

Incorrect Calculation

Abstraction: Pillar · Status: Draft

API response cwe.mitre.org

The product performs a calculation that generates incorrect or unintended results that are later used in security-critical decisions or resource management.

Dimensions

  • Behavior-Property: Calculation
  • Behavior-Type: Incorrect
Mapping guidance

This CWE entry is extremely high-level, a Pillar. In many cases, lower-level children or descendants are more appropriate. However, sometimes this weakness is forced to be used due to the lack of in-depth weakness research. See Research Gaps.

Where feasible, consider children or descendants of this entry instead.

Relationships and members
CanPrecede: CWE-170 · View CWE-1000
Modes of introduction
Implementation
Detection methods

Manual Analysis

This weakness can be detected using tools and techniques that require manual (human) analysis, such as penetration testing, threat modeling, and interactive tools that allow the tester to record and modify an active session.

Specifically, manual static analysis is useful for evaluating the correctness of allocation calculations. This can be useful for detecting overflow conditions (CWE-190) or similar weaknesses that might have serious security impacts on the program.

Effectiveness: High

These may be more effective than strictly automated techniques. This is especially the case with weaknesses that are related to design and business rules.

Automated Static Analysis

Automated static analysis, commonly referred to as Static Application Security Testing (SAST), can find some instances of this weakness by analyzing source code (or binary/compiled code) without having to execute it. Typically, this is done by building a model of data flow and control flow, then searching for potentially-vulnerable patterns that connect "sources" (origins of input) with "sinks" (destinations where the data interacts with external components, a lower layer such as the OS, etc.)

Fuzzing

Fuzz testing (fuzzing) is a powerful technique for generating large numbers of diverse inputs - either randomly or algorithmically - and dynamically invoking the code with those inputs. Even with random inputs, it is often capable of generating unexpected results such as crashes, memory corruption, or resource consumption. Fuzzing effectively produces repeatable test cases that clearly indicate bugs, which helps developers to diagnose the issues.

Effectiveness: High

Notes

Research Gap

Weaknesses related to this Pillar appear to be under-studied, especially with respect to classification schemes. Input from academic and other communities could help identify and resolve gaps or organizational difficulties within CWE.

Content history
Submission: CWE Content Team · MITRE · 2008-04-11 · CWE Draft 9
Modification: Eric Dalci · Cigital · 2008-07-01 · CWE 1.0

updated Potential_Mitigations, Time_of_Introduction

Modification: CWE Content Team · MITRE · 2008-09-08 · CWE 1.0

updated Relationships

Modification: CWE Content Team · MITRE · 2008-10-14 · CWE 1.0.1

updated Type

Modification: CWE Content Team · MITRE · 2008-11-24 · CWE 1.1

updated Relationships, Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2009-01-12 · CWE 1.2

updated Applicable_Platforms, Common_Consequences, Demonstrative_Examples, Description, Likelihood_of_Exploit, Potential_Mitigations, Relationships

Modification: CWE Content Team · MITRE · 2009-03-10 · CWE 1.3

updated Potential_Mitigations

Modification: CWE Content Team · MITRE · 2009-05-27 · CWE 1.4

updated Demonstrative_Examples

Modification: CWE Content Team · MITRE · 2009-07-27 · CWE 1.5

updated Demonstrative_Examples, Related_Attack_Patterns

Modification: CWE Content Team · MITRE · 2009-10-29 · CWE 1.6

updated Demonstrative_Examples, Relationships

Modification: CWE Content Team · MITRE · 2010-02-16 · CWE 1.8

updated Potential_Mitigations

Modification: CWE Content Team · MITRE · 2010-04-05 · CWE 1.8.1

updated Detection_Factors, Potential_Mitigations, References

Modification: CWE Content Team · MITRE · 2010-06-21 · CWE 1.9

updated Potential_Mitigations

Modification: CWE Content Team · MITRE · 2010-09-27 · CWE 1.10

updated Potential_Mitigations

Modification: CWE Content Team · MITRE · 2011-03-29 · CWE 1.12

updated Relationships

Modification: CWE Content Team · MITRE · 2011-06-01 · CWE 1.13

updated Common_Consequences

Modification: CWE Content Team · MITRE · 2011-09-13 · CWE 2.1

updated Relationships, Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2012-05-11 · CWE 2.2

updated Demonstrative_Examples, References, Relationships

Modification: CWE Content Team · MITRE · 2014-02-18 · CWE 2.6

updated Relationships

Modification: CWE Content Team · MITRE · 2014-07-30 · CWE 2.8

updated Relationships

Modification: CWE Content Team · MITRE · 2015-12-07 · CWE 2.9

updated Relationships

Modification: CWE Content Team · MITRE · 2017-01-19 · CWE 2.10

updated Applicable_Platforms

Modification: CWE Content Team · MITRE · 2017-11-08 · CWE 3.0

updated Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2019-01-03 · CWE 3.2

updated Relationships

Modification: CWE Content Team · MITRE · 2019-06-20 · CWE 3.3

updated Related_Attack_Patterns, Relationships

Modification: CWE Content Team · MITRE · 2020-02-24 · CWE 4.0

updated Applicable_Platforms, Observed_Examples, Relationships, Type

Modification: CWE Content Team · MITRE · 2020-08-20 · CWE 4.2

updated Relationships

Modification: CWE Content Team · MITRE · 2020-12-10 · CWE 4.3

updated Relationships

Modification: CWE Content Team · MITRE · 2021-07-20 · CWE 4.5

updated Relationships

Modification: CWE Content Team · MITRE · 2023-01-31 · CWE 4.10

updated Description, Potential_Mitigations

Modification: CWE Content Team · MITRE · 2023-04-27 · CWE 4.11

updated Relationships, Time_of_Introduction

Modification: CWE Content Team · MITRE · 2023-06-29 · CWE 4.12

updated Mapping_Notes, Research_Gaps

Modification: CWE Content Team · MITRE · 2025-09-09 · CWE 4.18

updated References

Modification: CWE Content Team · MITRE · 2025-12-11 · CWE 4.19

updated Weakness_Ordinalities

Modification: CWE Content Team · MITRE · 2026-04-30 · CWE 4.20

updated Detection_Factors, Observed_Examples, Potential_Mitigations

Modification: CWE Content Team · MITRE · 2026-10-28 · CWE 5.0

updated Description, Dimensions, Observed_Examples, References

225 vulnerabilities reference this CWE, most recent first.

CVE-2026-126204 (GCVE-0-2026-126204)

Vulnerability from cvelistv5 – Published: 2026-11-12 18:47 – Updated: 2026-11-13 19:03
VLAI
Title
express-rate-limit skipFailedRequests / skipSuccessfulRequests: with the default MemoryStore, a request from an earlier window is still un-counted from the current window
Summary
express-rate-limit is a basic rate-limiting middleware for Express. From 8.6.0 until 8.7.2, the built-in MemoryStore returns a Client whose mutable resetTime object is retained by middleware using skipFailedRequests or skipSuccessfulRequests. When a later request resets the client window, MemoryStore.resetClient mutates that same Date, so an earlier request that finishes or disconnects after the reset can pass the stale-window guard and decrement the current window's count. A client able to keep requests in flight across the boundary can obtain a bounded extra burst of up to one additional configured limit in the new window; the behavior does not increase the sustained rate. Stores that return a fresh Date are not affected. This issue is fixed in version 8.7.2.
Severity
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-13 19:01 UTC
CWE
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7868 records in the last 180 days details
References
Impacted products
Vendor Product Version
express-rate-limit express-rate-limit Affected: >= 8.6.0, < 8.7.2
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-116541 (GCVE-0-2026-116541)

Vulnerability from cvelistv5 – Published: 2026-10-26 14:59 – Updated: 2026-10-26 19:48
VLAI
Title
netty-tcnative before 2.0.84.Final Denial of Service via BIO Write Overcount
Summary
Netty netty-tcnative before 2.0.84.Final contains a denial of service vulnerability in the tcn_write_to_bytebuffer BIO write callback that overreports bytes consumed. Remote TLS 1.3 peers can provoke queued post-handshake records like NewSessionTicket or KeyUpdate to truncate flights, fail connections, or abort the JVM process.
Severity
8.2 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-26 19:30 UTC
CWE
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 8184 records in the last 180 days details
References
Impacted products
Vendor Product Version
netty netty-tcnative Affected: 0 , < 2.0.84.Final (custom)
Create a notification for this product.
netty netty-tcnative-boringssl-static Affected: 0 , < 2.0.84.Final (custom)
Create a notification for this product.
Date Public
2026-08-10 00:00
Credits
Yu Bao, PayPal Cyber Security Team
Show details on NVD website
To clipboard 

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CVE-2026-115786 (GCVE-0-2026-115786)

Vulnerability from cvelistv5 – Published: 2026-10-23 13:53 – Updated: 2026-10-28 19:48
VLAI
Title
Zimbra Collaboration Suite Shared-File Mailbox Quota Accounting Error Enables Quota Exhaustion
Summary
A mailbox quota-accounting vulnerability in Zimbra Collaboration Suite (ZCS) allows an authenticated user to consume another user’s mailbox quota by repeatedly sharing and revoking a document. Creation of the recipient’s shared-file record charges the document size to mailbox-wide usage. Revocation deletes the record and reverses its folder counters without reversing the mailbox-wide charge. Repeated normal share notifications therefore accumulate quota usage after the visible records are gone. On accounts with a finite quota, this can prevent incoming mail and other size-increasing operations without recipient interaction. The issue affects ZCS 10.1.16 and 10.1.20.
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: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-28 17:49 UTC
CWE
Assigner
rapid7 CNA under the mitre root
CNA scorecard B 76/100 over 78 records in the last 180 days details
References
Impacted products
Vendor Product Version
Zimbra Zimbra Collaboration Suite Affected: 0 , ≤ 10.1.20 (semver)
Create a notification for this product.
Date Public
2026-10-23 13:51
Credits
Jonah Burgess (CryptoCat), Senior Security Researcher, Rapid7
Show details on NVD website
To clipboard 

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CVE-2026-115336 (GCVE-0-2026-115336)

Vulnerability from cvelistv5 – Published: 2026-11-09 16:44 – Updated: 2026-11-12 17:02
VLAI
Title
FTP Quota Accounting Bypass in Progress WS_FTP Server
Summary
Incorrect quota accounting in Progress Software WS_FTP Server releases prior to 2025.0.5 on Windows could allow an authenticated user with upload and delete permissions to exceed storage quotas, potentially causing denial of service.
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: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-12 17:01 UTC
CWE
Assigner
ProgressSoftware CNA under the mitre root
CNA scorecard B 79/100 over 207 records in the last 180 days details
References
Impacted products
Vendor Product Version
Progress Software WS_FTP Server Affected: 2025.0.0 , < 2025.0.5 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-114117 (GCVE-0-2026-114117)

Vulnerability from cvelistv5 – Published: 2026-10-21 00:37 – Updated: 2026-10-21 20:12
VLAI
Title
Vyper 0.3.8 through 0.5.0b1 Optimizer Miscompilation of msg.value | K in Ternary Branches
Summary
Vyper 0.3.8 through 0.5.0b1 contains an optimizer miscompilation in which (msg.value | K) or (len(msg.data) | K), where K is any nonzero integer literal, is compiled to the constant 1 when used as a ternary expression branch under -O gas (the default) or -O codesize. Affected contracts use the wrong value in storage writes, arithmetic, indexes, return values, or events without warning or revert, which can record deposits incorrectly and lock funds.
Severity
8.2 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-21 20:11 UTC
CWE
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 8184 records in the last 180 days details
References
Impacted products
Vendor Product Version
vyperlang vyper Affected: 0.3.8 , ≤ 0.5.0b1 (python)
    cpe:2.3:a:vyperlang:vyper:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-10-02 00:00
Credits
DELENE-TCHIO-ROMUALD
Show details on NVD website
To clipboard 

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CVE-2026-109410 (GCVE-0-2026-109410)

Vulnerability from cvelistv5 – Published: 2026-10-13 13:30 – Updated: 2026-10-16 21:56
VLAI
Title
macrozheng mall mall-admin/mall-portal moneyInfo OmsOrderServiceImpl.updateMoneyInfo calculation
Summary
A vulnerability has been found in macrozheng mall 1.0.3 dcaa93b. The impacted element is the function OmsOrderServiceImpl.updateMoneyInfo of the file /order/update/moneyInfo of the component mall-admin/mall-portal. The manipulation leads to incorrect calculation. The attack can be initiated remotely. The vendor deleted the GitHub issue for this vulnerability without any explanation.
Severity
4.8 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X
2.4 (Low)
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N/E:X/RL:X/RC:C
2.4 (Low)
CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N/E:X/RL:X/RC:C
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 21:56 UTC
CWE
Assigner
VulDB CNA under the mitre root
CNA scorecard B 83/100 over 3856 records in the last 180 days details
References
URL Tags
https://vuldb.com/vuln/416952 vdb-entrytechnical-description
https://vuldb.com/vuln/416952/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-109410 third-party-advisory
https://vuldb.com/submit/982840 third-party-advisory
https://github.com/macrozheng/mall/issues/1004 issue-tracking
https://github.com/macrozheng/mall/ product
Impacted products
Vendor Product Version
macrozheng mall Affected: 1.0.3 dcaa93b
    cpe:2.3:a:macrozheng:mall:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
peanutbutter (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

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CVE-2026-107721 (GCVE-0-2026-107721)

Vulnerability from cvelistv5 – Published: 2026-10-08 21:45 – Updated: 2026-10-09 15:13
VLAI
Title
fast-jwt clockTolerance: Infinity silently bypasses both exp and nbf validation (and persists in the verifier cache)
Summary
fast-jwt provides fast JSON Web Token (JWT) implementation. Prior to 6.3.0, fast-jwt createVerifier accepts Infinity for clockTolerance because its option validation checks type and negativity but not finiteness. In validateClaimDateValue, infinite positive and negative modifiers make exp and nbf comparisons always pass, allowing expired or not-yet-active tokens to be accepted. The verifier cache also derives infinite bounds, so entries created under this configuration can remain valid until eviction. Exploitation requires an application administrator or equivalent configuration path to set clockTolerance to Infinity. This issue is fixed in version 6.3.0.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-09 15:00 UTC
CWE
  • CWE-613 - Insufficient Session Expiration
  • CWE-682 - Incorrect Calculation
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7868 records in the last 180 days details
References
Impacted products
Vendor Product Version
nearform fast-jwt Affected: < 6.3.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-106438 (GCVE-0-2026-106438)

Vulnerability from cvelistv5 – Published: 2026-10-08 18:44 – Updated: 2026-10-08 19:21
VLAI
Title
Silent Decimal128 value corruption via incorrect exactness check in MongoDB C Driver
Summary
An incorrect calculation in Decimal128 string parsing in the MongoDB C Driver can accept certain over-precision inputs containing leading zeros instead of rejecting them. This produces a value different from the supplied text. An actor who can provide a decimal string to an embedding application, including through Extended JSON parsing, can cause the application to store or use an incorrect numeric value.
Severity
5.1 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
4 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 19:20 UTC
CWE
Assigner
mongodb CNA under the mitre root
CNA scorecard C 70/100 over 261 records in the last 180 days details
References
Impacted products
Vendor Product Version
MongoDB C Driver Affected: 1.4.0 , < 1.30.13 (semver)
Affected: 2.0.0 , < 2.5.6 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-101963 (GCVE-0-2026-101963)

Vulnerability from cvelistv5 – Published: 2026-10-14 17:19 – Updated: 2026-10-14 20:26
VLAI
Title
Junos OS and Junos OS Evolved: A BGP EVPN neighbor causes an rpd crash when SRv6 multihoming is used
Summary
An Incorrect Calculation vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos EVO allows a remote BGP EVPN neighbor to cause an rpd crash when SRv6 EVPN multihoming is configured.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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:L
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-14 19:29 UTC
CWE
Assigner
juniper CNA under the mitre root
CNA scorecard B 84/100 over 193 records in the last 180 days details
References
Impacted products
Vendor Product Version
Juniper Networks Junos OS Affected: 25.2 , < 25.2R2-S2 (custom)
Affected: 25.4 , < 25.4R1-S3 (custom)
Affected: 26.2 , < 26.2R1-S2 (custom)
Create a notification for this product.
Juniper Networks Junos OS Evolved Affected: 25.2 , < 25.2R2-S2-EVO (custom)
Affected: 25.4 , < 25.4R1-S3-EVO (custom)
Affected: 26.2 , < 26.2R1-S2-EVO (custom)
Affected: 23.4X100 (custom)
Affected: 25.2X100 , < 25.2X100-D35-EVO (custom)
Affected: 25.4X300 , < 25.4X300-D40-EVO (custom)
Create a notification for this product.
Date Public
2026-10-14 16:00
Show details on NVD website
To clipboard 

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CVE-2026-97071 (GCVE-0-2026-97071)

Vulnerability from cvelistv5 – Published: 2026-10-05 08:40 – Updated: 2026-10-06 10:41 X_Open Source
VLAI
Title
WordPress CURCY plugin <= 2.2.17 - Broken Access Control vulnerability
Summary
Incorrect Calculation vulnerability in VillaTheme CURCY woo-multi-currency allows Integer Attacks.This issue affects CURCY: from n/a through 2.2.17.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-06 10:17 UTC
CWE
Assigner
Patchstack CNA under the mitre root
CNA scorecard B 76/100 over 3589 records in the last 180 days details
References
Impacted products
Vendor Product Version
VillaTheme CURCY Affected: 0 , ≤ 2.2.17 (custom)
Create a notification for this product.
Date Public
2026-10-05 08:40
Credits
dcs | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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Mitigation
Implementation

Understand your programming language's underlying representation and how it interacts with numeric calculation. Pay close attention to byte size discrepancies, precision, signed/unsigned distinctions, truncation, conversion and casting between types, "not-a-number" calculations, and how your language handles numbers that are too large or too small for its underlying representation.

Mitigation MIT-8
Implementation

Strategy: Input Validation

Perform input validation on any numeric input by ensuring that it is within the expected range. Enforce that the input meets both the minimum and maximum requirements for the expected range.

Mitigation
Implementation

Use the appropriate type for the desired action. For example, in C/C++, only use unsigned types for values that could never be negative, such as height, width, or other numbers related to quantity.

Mitigation
Architecture and Design

Strategy: Language Selection

  • Use languages, libraries, or frameworks that make it easier to handle numbers without unexpected consequences.
  • Examples include safe integer handling packages such as SafeInt (C++) or IntegerLib (C or C++).
Mitigation
Architecture and Design

Strategy: Libraries or Frameworks

  • Use languages, libraries, or frameworks that make it easier to handle numbers without unexpected consequences.
  • Examples include safe integer handling packages such as SafeInt (C++) or IntegerLib (C or C++).
Mitigation MIT-26
Implementation

Strategy: Compilation or Build Hardening

Examine compiler warnings closely and eliminate problems with potential security implications, such as signed / unsigned mismatch in memory operations, or use of uninitialized variables. Even if the weakness is rarely exploitable, a single failure may lead to the compromise of the entire system.

CAPEC-128: Integer Attacks

An attacker takes advantage of the structure of integer variables to cause these variables to assume values that are not expected by an application. For example, adding one to the largest positive integer in a signed integer variable results in a negative number. Negative numbers may be illegal in an application and the application may prevent an attacker from providing them directly, but the application may not consider that adding two positive numbers can create a negative number do to the structure of integer storage formats.

CAPEC-129: Pointer Manipulation

This attack pattern involves an adversary manipulating a pointer within a target application resulting in the application accessing an unintended memory location. This can result in the crashing of the application or, for certain pointer values, access to data that would not normally be possible or the execution of arbitrary code. Since pointers are simply integer variables, Integer Attacks may often be used in Pointer Attacks.

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