Is CVE-2026-50185 in the CISA KEV catalog?

No. CVE-2026-50185 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-50185?

CVE-2026-50185 has a CVSS v4 base score of 2.0 (LOW).

What is the EPSS score for CVE-2026-50185?

CVE-2026-50185 has an EPSS score of 0.16% (5th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-50185?

Upgrade rust-cmov on debian unstable to 0.5.4-1 or later.

CVE & CISA-KEV Catalog

CVE-2026-50185

LOW

2.0

CVSS v4

NVD

Description

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. From 0.1.1 until 0.5.4, the aarch64 implementations of Cmov and CmovEq in cmov/src/backends/aarch64.rs assume high bits are zero-extended when loading values smaller than a register, so set high bits such as [8..] in a Cmov selector or [16..] of self or other in the u16 and i16 CmovEq implementations can cause left.cmovz(&right, condition) to produce incorrect output. This issue is fixed in version 0.5.4.

CWE-758

How to fix

Remediation Available

rust-cmovDebian

Fixed in:0.5.4-1CVE-2026-50185

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Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v4 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

Impact

CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Exploit Intelligence

0.16%probability of exploitation in 30 days

5thpercentile

Low risk: more likely to be exploited than 5% of all known CVEs.

References

Other references3

Related Vulnerabilities

Other CWE-758 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2026-22858	Critical	9.1	0.6%	-	Fix
CVE-2023-30624	Low	3.9	0.4%	-	Fix
CVE-2026-4705	Critical	9.8	0.4%	-	Fix
CVE-2025-55160	Medium	6.1	0.4%	-	Fix
CVE-2026-24407	High	7.1	0.4%	-	Fix
CVE-2026-24404	High	7.1	0.4%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-20.