# CVE-2026-19382: Almico Speedfan MSR Index speedfan.sys KiSystemCall64 memory leak

> A local attacker can exploit a memory leak in Speedfan's kernel driver to disclose sensitive memory contents.

- **Severity:** Medium 4.6 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 10 Aug 2026
- **Updated:** 13 Aug 2026
- **Also known as:** GHSA-9q7p-3ffm-5vvp

## What is CVE-2026-19382?

CVE-2026-19382 is a medium-severity vulnerability in Almico Speedfan, published on 10 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A weakness has been identified in Almico Speedfan 4.52. This affects the function KiSystemCall64 in the library speedfan.sys of the component MSR Index Handler. Executing a manipulation can lead to memory leak. The attack can only be executed locally. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-404 (Improper Resource Shutdown or Release), CWE-401 (Missing Release of Memory after Effective Lifetime)

## Which versions are affected by CVE-2026-19382?


## How do I fix CVE-2026-19382?

No fix has been published for CVE-2026-19382 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-19382 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-19382 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-19382 and fix it if it is affected.

What it is: CVE-2026-19382 is a medium-severity vulnerability in Almico Speedfan, published on 10 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-19382 exists.

Affected product: Almico Speedfan. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-19382/ (Markdown: https://insights.sbomify.com/CVE-2026-19382/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-19382
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-19382
- OSV: https://osv.dev/vulnerability/CVE-2026-19382

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-19382/
Summaries are generated and may contain mistakes; the official description above is the record.