# Out-of-bounds read in Siemens Capital Embedded AR Classic 431-422 and others

CVE record · `CVE-2026-89208`

- **Identifiers:** `CVE-2026-89208`
- **State:** Confirmed
- **Severity:** CVSS 6.9 Medium
- **Critical:** No
- **CNA:** siemens
- **Weakness (CWE):** [CWE-125](https://cwe.mitre.org/data/definitions/125.html)
- **Tags:** [Memory corruption](https://agentprime.io/advisories/tag/memory-corruption.md)
- **Technologies:** [Siemens Capital Embedded AR Classic 431-422](https://agentprime.io/advisories/technology/siemens-capital-embedded-ar-classic-431-422.md) · [Siemens Capital Embedded AR Classic R20-11](https://agentprime.io/advisories/technology/siemens-capital-embedded-ar-classic-r20-11.md) · [Siemens Desigo PXC00-E.D](https://agentprime.io/advisories/technology/siemens-desigo-pxc00-e-d.md) · [Siemens Desigo PXC00-U](https://agentprime.io/advisories/technology/siemens-desigo-pxc00-u.md) · [Siemens Desigo PXC001-E.D](https://agentprime.io/advisories/technology/siemens-desigo-pxc001-e-d.md) · [Siemens Desigo PXC100-E.D](https://agentprime.io/advisories/technology/siemens-desigo-pxc100-e-d.md) · [Siemens Desigo PXC12-E.D](https://agentprime.io/advisories/technology/siemens-desigo-pxc12-e-d.md) · [Siemens Desigo PXC128-U](https://agentprime.io/advisories/technology/siemens-desigo-pxc128-u.md) · [Siemens Desigo PXC200-E.D](https://agentprime.io/advisories/technology/siemens-desigo-pxc200-e-d.md) · [Siemens Desigo PXC22-E.D](https://agentprime.io/advisories/technology/siemens-desigo-pxc22-e-d.md) · [Siemens Desigo PXC22.1-E.D](https://agentprime.io/advisories/technology/siemens-desigo-pxc22-1-e-d.md) · [Siemens Desigo PXC36.1-E.D](https://agentprime.io/advisories/technology/siemens-desigo-pxc36-1-e-d.md) · [Siemens Desigo PXC50-E.D](https://agentprime.io/advisories/technology/siemens-desigo-pxc50-e-d.md) · [Siemens Desigo PXC64-U](https://agentprime.io/advisories/technology/siemens-desigo-pxc64-u.md) · [Siemens Desigo PXM20-E](https://agentprime.io/advisories/technology/siemens-desigo-pxm20-e.md)
- **Published:** 13 Oct 2026
- **Updated:** 13 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: siemens) at 13 Oct 2026, 09:19 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Affected products, as the CNA wrote them

- Vendor: Siemens. Product: Capital Embedded AR Classic 431-422.
  - affected: `before *` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: Capital Embedded AR Classic R20-11.
  - affected: `before V2303` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: Desigo PXC00-E.D.
  - affected: `V2.3 to before *` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: Desigo PXC00-U.
  - affected: `V2.3 to before *` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: Desigo PXC001-E.D.
  - affected: `V2.3 to before *` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: Desigo PXC100-E.D.
  - affected: `V2.3 to before *` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: Desigo PXC12-E.D.
  - affected: `V2.3 to before *` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: Desigo PXC128-U.
  - affected: `V2.3 to before *` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: Desigo PXC200-E.D.
  - affected: `V2.3 to before *` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: Desigo PXC22-E.D.
  - affected: `V2.3 to before *` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: Desigo PXC22.1-E.D.
  - affected: `V2.3 to before *` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: Desigo PXC36.1-E.D.
  - affected: `V2.3 to before *` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: Desigo PXC50-E.D.
  - affected: `V2.3 to before *` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: Desigo PXC64-U.
  - affected: `V2.3 to before *` (custom)
  - Other versions: unknown
- Vendor: Siemens. Product: Desigo PXM20-E.
  - affected: `V2.3 to before *` (custom)
  - Other versions: unknown

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

- 5.3 Medium, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N`, from CNA (siemens)
- 6.9 Medium, CVSS 4.0: `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N`, from CNA (siemens) (used for this record)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0026, the 18th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the CVE Program, published 13 Oct 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-89208](https://www.cve.org/CVERecord?id=CVE-2026-89208)
- [NVD: CVE-2026-89208](https://nvd.nist.gov/vuln/detail/CVE-2026-89208)

### References from the CNA

- <https://cert-portal.siemens.com/productcert/html/ssa-055299.html>
- <https://cert-portal.siemens.com/productcert/html/ssa-333035.html>

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2026-89208>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

---

The web page: <https://agentprime.io/advisories/CVE-2026-89208/>. Everything for agents: <https://agentprime.io/llms.txt>.
