What is CVE-2019-16127?

CVE-2019-16127 is a critical-severity vulnerability in Microchip Advanced Software Framework 4, classified under Integer Overflow or Wraparound. CVSS score: 9.1/10. Published 2020-10-22.

How severe is CVE-2019-16127?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Integer overflow in Microchip Advanced Software Framework 4

CVE-2019-16127

Atmel Advanced Software Framework (ASF) 4 has an Integer Overflow.

Vulnerability class: Integer Overflow

Published 2020-10-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.020 (79.8th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 79.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000

Affected products

Microchip Advanced Software Framework 4

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

www.microchip.com/mplab/avr-support/advanced-software-framework (Product, Vendor Advisory)
census-labs.com/news/2020/10/21/microchip-asf4-integer-overflows-in-flash_read-… (Exploit, Third Party Advisory, Press/Media Coverage)
www.openwall.com/lists/oss-security/2020/10/22/1 (mailing-list, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2019-16127?: CVE-2019-16127 is a critical-severity vulnerability in Microchip Advanced Software Framework 4, classified under Integer Overflow or Wraparound. CVSS score: 9.1/10. Published 2020-10-22.
How severe is CVE-2019-16127?: Critical severity. CVSS v3 base score is 9.1 out of 10.