# CVE-2022-32543: Integer overflow in Alyac

> A specially crafted OLE file can trigger an integer overflow leading to heap buffer overflow and arbitrary code execution in ESTsoft Alyac.

- **Severity:** High 7.3 (`CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/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:** A user has to click or open something
- **Fix available:** No
- **Published:** 5 Aug 2022
- **Updated:** 15 Apr 2025
- **Also known as:** GHSA-3r68-64pc-x636

## What is CVE-2022-32543?

CVE-2022-32543 is a high-severity vulnerability in ESTsoft Alyac, published on 5 Aug 2022. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

An integer overflow vulnerability exists in the way ESTsoft Alyac 2.5.8.544 parses OLE files. A specially-crafted OLE file can lead to a heap buffer overflow which can result in arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.

Weakness: CWE-190 (Integer Overflow or Wraparound), CWE-680 (Integer Overflow to Buffer Overflow)

## Which versions are affected by CVE-2022-32543?

It affects 1 product.


Products: Estsoft Alyac.

## How do I fix CVE-2022-32543?

No fix has been published for CVE-2022-32543 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-32543 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-32543 exists.

## Other vulnerabilities in ESTsoft Alyac

- [CVE-2022-29886](https://insights.sbomify.com/CVE-2022-29886/): Integer overflow in Alyac (high 7.3)
- [CVE-2022-43665](https://insights.sbomify.com/CVE-2022-43665/): Denial of service in Alyac (medium 5.0)
- [CVE-2022-21147](https://insights.sbomify.com/CVE-2022-21147/): Memory corruption in Alyac (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-32543 and fix it if it is affected.

What it is: CVE-2022-32543 is a high-severity vulnerability in ESTsoft Alyac, published on 5 Aug 2022. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-32543 exists.

Affected product: ESTsoft Alyac. 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-2022-32543/ (Markdown: https://insights.sbomify.com/CVE-2022-32543/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-32543
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-32543
- OSV: https://osv.dev/vulnerability/CVE-2022-32543

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-32543/
Summaries are generated and may contain mistakes; the official description above is the record.