Integer overflow in Silicon Labs Gecko Bootloader leads to unbounded memory access
Priority LOW 36CWE-125Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.
Summary
An integer overflow in Silicon Labs Gecko Bootloader version 4.3.1 and earlier allows unbounded memory access when reading from or writing to storage slots.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00251 16th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| silabs.com | GSDK | 1.0 – 4.3.1 | — | No fix listed | CNA |
- GSDK Vendorsilabs.com Affected 1.0 – 4.3.1 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:silabs:gecko_bootloader:*:*:*:*:*:*:*:* | up to 4.3.1 | Vulnerable | silabs.com |
- cpe:2.3:a:silabs:gecko_bootloader:*:*:*:*:*:*:*:* Versions up to 4.3.1 Vulnerable ·silabs.com
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-3487
- 2026-10-03 Alias added: GHSA-vx25-5r7c-m73f
References
More silabs.com Gecko Bootloader vulnerabilities
- TI-2022-08740 Gecko Standalone Bootloader vulnerability may allow bypassing application secure boot in some Series 2 devices CVSS 3.1CRITICAL 9.1
- TI-2023-03749 Second Stage Gecko Bootloader GBL Parser Buffer Overrun Vulnerability CVSS 3.1CRITICAL 9.8
Sources
- CVE-2023-3487 · CVE Program
- CVE-2023-3487 · NVD
- FIRST EPSS
- GHSA-vx25-5r7c-m73f · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences