CVE Explorer

CVE-2026-23519

RustCrypto CMOV provides conditional move CPU intrinsics which are guaranteed on major platforms to execute in constant-time and not be rewritten as branches by the compiler. Prior to 0.4.4, the thumbv6m-none-eabi (Cortex M0, M0+ and M1) compiler emits non-constant time assembly when using cmovnz (portable version). This vulnerability is fixed in 0.4.4.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:3d5cf357b3a92b01619210a818354353d0a27051152017a6f4ee2e08643c5707

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"utils","vendor":"RustCrypto","versions":[{"status":"affected","version":"< 0.4.4"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:6ab1b5258de3a9732b774c2fd465d4e002edb5ba2d0461ef9c95c0c10f35f259 · sha256:e470ef8e0ed5a462… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"HIGH","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.9,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:6ab1b5258de3a9732b774c2fd465d4e002edb5ba2d0461ef9c95c0c10f35f259 · sha256:e470ef8e0ed5a462… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion

{"cweId":"CWE-208","description":"CWE-208: Observable Timing Discrepancy","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:6ab1b5258de3a9732b774c2fd465d4e002edb5ba2d0461ef9c95c0c10f35f259 · sha256:e470ef8e0ed5a462… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions

{"name":"https://github.com/RustCrypto/utils/commit/55977257e7c82a309d5e8abfdd380a774f0f9778","tags":["x_refsource_MISC"],"url":"https://github.com/RustCrypto/utils/commit/55977257e7c82a309d5e8abfdd380a774f0f9778"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:6ab1b5258de3a9732b774c2fd465d4e002edb5ba2d0461ef9c95c0c10f35f259 · sha256:e470ef8e0ed5a462… · /containers/cna/references/1

{"tags":["exploit"],"url":"https://github.com/RustCrypto/utils/security/advisories/GHSA-2gqc-6j2q-83qp"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:6ab1b5258de3a9732b774c2fd465d4e002edb5ba2d0461ef9c95c0c10f35f259 · sha256:e470ef8e0ed5a462… · /containers/adp/0/references/0

{"name":"https://github.com/RustCrypto/utils/security/advisories/GHSA-2gqc-6j2q-83qp","tags":["x_refsource_CONFIRM"],"url":"https://github.com/RustCrypto/utils/security/advisories/GHSA-2gqc-6j2q-83qp"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:6ab1b5258de3a9732b774c2fd465d4e002edb5ba2d0461ef9c95c0c10f35f259 · sha256:e470ef8e0ed5a462… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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