# CVE-2026-73584: Sblim-sfcb: sblim-sfcb: privileged file corruption and denial of service via insecure temporary file handling

> A local attacker can exploit a race condition in sblim-sfcb to corrupt privileged files or cause denial of service via insecure temporary file handling.

- **Severity:** Medium 6.3 (`CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 13 Aug 2026
- **Updated:** 13 Aug 2026
- **Also known as:** AZL-96612, GHSA-58x3-7493-rjr4, UBUNTU-CVE-2026-73584

## What is CVE-2026-73584?

CVE-2026-73584 is a medium-severity vulnerability in Redhat Enterprise Linux, published on 13 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A flaw was found in sblim-sfcb. A local, low-privileged attacker can exploit a race condition during privileged instance migration by manipulating a temporary file in the `/tmp` directory. By repeatedly recreating a symbolic link, the attacker can redirect privileged output to an arbitrary file. This can lead to privileged file corruption or a denial of service (DoS) on the system.

Weakness: CWE-377 (DEPRECATED: Insecure Temporary File)

## Which versions are affected by CVE-2026-73584?

It affects 1 product.


Products: Redhat Enterprise Linux.

## How do I fix CVE-2026-73584?

No fix has been published for CVE-2026-73584 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-73584 being exploited?

There is no known exploitation of CVE-2026-73584 in the wild and no public exploit code.

## Other vulnerabilities in Redhat Enterprise Linux

- [CVE-2018-14667](https://insights.sbomify.com/CVE-2018-14667/): Red Hat JBoss RichFaces Framework Expression Language Injection (critical 9.8, exploited in the wild)
- [CVE-2021-20325](https://insights.sbomify.com/CVE-2021-20325/): Missing fixes for CVE-2021-40438 and CVE-2021-26691 in the versions of httpd, as shipped in Red Hat Enterprise Linux 8.5.0, causes a securit (critical 9.8)
- [CVE-2018-25011](https://insights.sbomify.com/CVE-2018-25011/): Memory corruption in libwebp (critical 9.8)
- [CVE-2018-25014](https://insights.sbomify.com/CVE-2018-25014/): Other in libwebp (critical 9.8)
- [CVE-2014-3585](https://insights.sbomify.com/CVE-2014-3585/): Supply chain in redhat-upgrade-tool (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-73584 and fix it if it is affected.

What it is: CVE-2026-73584 is a medium-severity vulnerability in Redhat Enterprise Linux, published on 13 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-73584 in the wild and no public exploit code.

Affected product: Redhat Enterprise Linux. 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-2026-73584/ (Markdown: https://insights.sbomify.com/CVE-2026-73584/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-73584
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-73584
- OSV: https://osv.dev/vulnerability/CVE-2026-73584

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-73584/
Summaries are generated and may contain mistakes; the official description above is the record.