CWE-733 (Compiler Optimization Removal or Modification of Security-critical Code) documents a weakness type used across vulnerability databases and security assessments. Use the sections below for definition, context, and mapped CVEs.
The developer builds a security-critical protection mechanism into the software, but the compiler optimizes the program such that the mechanism is removed or modified.
| Kind | Name | Class | Prevalence | OS / CPE |
|---|---|---|---|---|
| language | C | — | Often | — |
| language | C++ | — | Often | — |
| language | — | Compiled | Undetermined | — |
These CVEs are mapped to this weakness in this database and kept for traceability and search.
| CVE | Published | Summary |
|---|---|---|
| CVE-2025-13024 | 2025-11-11 | JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 145 and Thunderbird 145. |
| CVE-2025-20241 | 2025-08-27 | A vulnerability in the Intermediate System-to-Intermediate System (IS-IS) feature of Cisco NX-OS Software for Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches in standalone NX-OS … |
| CVE-2024-58262 | 2025-07-27 | The curve25519-dalek crate before 4.1.3 for Rust has a constant-time operation on elliptic curve scalars that is removed by LLVM. |
| CVE-2025-52496 | 2025-07-04 | Mbed TLS before 3.6.4 has a race condition in AESNI detection if certain compiler optimizations occur. An attacker may be able to extract an AES key from a multithreaded program, or perform a GCM forg… |
| CVE-2020-15294 | 2020-12-17 | Compiler Optimization Removal or Modification of Security-critical Code vulnerability in IntPeParseUnwindData() results in multiple dereferences to the same pointer. If the pointer is located in memor… |
| Date | Name | Version | Importance | Comment |
|---|---|---|---|---|
| 2008-11-24 | CWE Content Team | 1.1 | — | updated Detection_Factors |
| 2009-03-10 | CWE Content Team | 1.3 | — | updated Applicable_Platforms, Observed_Examples, Related_Attack_Patterns, Relationships |
| 2010-02-16 | CWE Content Team | 1.8 | — | updated References |
| 2011-06-01 | CWE Content Team | 1.13 | — | updated Common_Consequences |
| 2012-05-11 | CWE Content Team | 2.2 | — | updated Relationships |
| 2014-07-30 | CWE Content Team | 2.8 | — | updated Relationships |
| 2017-01-19 | CWE Content Team | 2.10 | — | updated Relationships |
| 2017-11-08 | CWE Content Team | 3.0 | — | updated References, Relationships |
| 2018-03-27 | CWE Content Team | 3.1 | — | updated References, Relationships |
| 2020-02-24 | CWE Content Team | 4.0 | — | updated Relationships |
| 2020-06-25 | CWE Content Team | 4.1 | — | updated Observed_Examples |
| 2023-04-27 | CWE Content Team | 4.11 | — | updated Relationships |
| 2023-06-29 | CWE Content Team | 4.12 | — | updated Mapping_Notes |
| 2024-02-29 | CWE Content Team | 4.14 | — | updated Demonstrative_Examples |
| 2025-12-11 | CWE Content Team | 4.19 | — | updated Common_Consequences, Demonstrative_Examples, Detection_Factors, Time_of_Introduction, Weakness_Ordinalities |