Integer overflow in Garmin Forerunner 235
CVE-2020-27484
Garmin Forerunner 235 before 8.20 is affected by: Integer Overflow. The component is: ConnectIQ TVM. The attack vector is: To exploit the vulnerability, the attacker must upload a malicious ConnectIQ application to the ConnectIQ store. The ConnectIQ program interpreter fails to check for overflow when allocating the array for the NEWA instruction. This a constrained read/write primitive across the entire MAX32630 address space. A successful exploit would allow a ConnectIQ app store application to escape and perform activities outside the restricted application execution environment.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.018 (77.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 77.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/atredispartners/advisories/blob/master/ATREDIS-2020-0004.md (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-27484?
- CVE-2020-27484 is a critical-severity vulnerability in Garmin Forerunner 235, classified under Integer Overflow or Wraparound. CVSS score: 9.9/10. Published 2020-11-16.
- How severe is CVE-2020-27484?
- Critical severity. CVSS v3 base score is 9.9 out of 10.