Is CVE-2026-104855 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2026-104855 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

No public exploit code is known.

No fixed version is listed yet; check the vendor advisory for mitigations.

Brandefense priority: routine patching, as no exploitation is known and its severity is moderate or low.

Low

Wasmtime: Preemption and traps during bulk operations enable breaking internal VM state

Published Oct 2, 2026 · Updated Oct 12, 2026

The full analysis for this CVE is not ready yet, so this page shows the scores and scope from the public record. How CVEs are selected

Routine patching

CVE-2026-104855 is a low-severity vulnerability (CVSS 2.0).
It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: routine patching, as no exploitation is known and its severity is moderate or low.

CVSS

2.0

EPSS (30-day exploit likelihood)

n/a

Exploit maturity

None known

ATLAS score

n/a

Outside the curated set

FAQ

Wasmtime: Preemption and traps during bulk operations enable breaking internal VM state
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: routine patching, as no exploitation is known and its severity is moderate or low.

Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.