Out-of-bounds Read in Nxp Lpc55s69jbd100
CVE-2021-40154
NXP LPC55S69 devices before A3 have a buffer over-read via a crafted wlength value in a GET Descriptor Configuration request during use of USB In-System Programming (ISP) mode. This discloses protected flash memory.
Vulnerability class: Buffer Overflow
EPSS: 0.007 (50.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L.
Affected products
- Nxp Lpc55s69jbd100 — versions 0a, 1b
- Nxp Lpc55s69jbd100_firmware
- Nxp Lpc55s69jbd64 — versions 0a, 1b
- Nxp Lpc55s69jbd64_firmware
- Nxp Lpc55s69jev98 — versions 0a, 1b
- Nxp Lpc55s69jev98_firmware
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Third Party Advisory, x_refsource_MISC, Broken Link)
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-40154?
- CVE-2021-40154 is a medium-severity vulnerability in Nxp Lpc55s69jbd100, classified under Out-of-bounds Read. CVSS score: 6.1/10. Published 2021-12-01.
- How severe is CVE-2021-40154?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2021-40154 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.