Quick answers
- Is CVE-2026-18349 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-18349 being exploited in the wild.
- How severe is CVE-2026-18349?
- Informational severity, published 24 August 2026.
- Which products and versions are affected?
- Microchip SAMA5D4.
- Is there a fix for CVE-2026-18349?
- 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-2026-18349 attacked?
- It is attacked with physical access.
- Am I affected by CVE-2026-18349?
- Check whether you run Microchip SAMA5D4. 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 SAMA5D4 microcontroller lacks adequate countermeasures against fault injection attacks via voltage and clock manipulation. This is a hardware-level vulnerability where insufficient glitch detection and prevention allows an attacker with physical access to the device to induce faults during cryptographic operations or security-critical code execution. An attacker can exploit this to bypass authentication, extract secrets, or execute unauthorized code. The attack requires direct physical access to the device and knowledge of timing or power characteristics. Microchip has acknowledged this issue but specific patch details are not publicly available in the accessible references.
Affected products
- Microchip SAMA5D4
Timeline
- 2026-08-24: disclosed