# CVE-2026-89172: Microchip AN1044, AN953, and SW300052 physical side-channel vulnerability

Source: https://junglewise.ai/threats/cve-2026-89172-microchip-an1044-an953-and-sw300052-physical-side-channel  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-12. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-89172 · Severity: info · Published 2026-09-12

Microchip application notes and software contain improper protections against physical side-channel attacks, which could allow an attacker with direct physical access to extract sensitive information such as cryptographic keys or other protected data. This vulnerability typically requires specialized hardware and lab-level physical access to exploit, but poses a risk to systems handling sensitive cryptographic operations.

Vendors: [Microchip](https://junglewise.ai/threats/vendors/microchip).

## Quick answers

**Is CVE-2026-89172 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-89172 being exploited in the wild.

**How severe is CVE-2026-89172?** Informational severity, published 12 September 2026.

**Which products and versions are affected?** Microchip AN1044 through A; Microchip AN953 through A; Microchip SW300052 through 2.6.

**Is there a fix for CVE-2026-89172?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-89172 attacked?** It is attacked with physical access.

**Am I affected by CVE-2026-89172?** Check whether you run Microchip AN1044, Microchip AN953 or Microchip SW300052 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is classified as improper protection of physical side channels, a class of attack that exploits information leakage through physical phenomena (such as power consumption, timing, electromagnetic emissions, or acoustic emissions) to deduce secrets during cryptographic operations. The affected components are Microchip application notes AN1044 and AN953, and software package SW300052 through version 2.6. Exploitation requires physical proximity to the device and specialized measurement equipment; the vulnerability does not require network access or prior authentication. An attacker with physical access could potentially recover cryptographic keys or other sensitive data by analyzing side-channel emissions. Patch or mitigation guidance from Microchip is recommended for affected deployments.

## Affected products

- Microchip AN1044 through A
- Microchip AN953 through A
- Microchip SW300052 through 2.6

## Timeline

- 2026-09-12: disclosed

## References

- [https://www.microchip.com/en-us/application-notes/an1044](https://www.microchip.com/en-us/application-notes/an1044)
- [https://www.microchip.com/en-us/application-notes/an953](https://www.microchip.com/en-us/application-notes/an953)