CVE-2021-31532

MEDIUM
6.8
CVSS Score
Published: May 6, 2021 at 10:49 AM UTC
Updated: June 17, 2026 at 03:51 AM UTC
48 products affected across 1 vendorLpc55s69jbd64 FirmwareLpc55s69jbd100 FirmwareLpc55s69jev98 Firmware

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Severity
MEDIUM6.8
Exploit prediction
EPSS 0.5%

Description

NXP LPC55S6x microcontrollers (0A and 1B), i.MX RT500 (silicon rev B1 and B2), i.MX RT600 (silicon rev A0, B0), LPC55S6x, LPC55S2x, LPC552x (silicon rev 0A, 1B), LPC55S1x, LPC551x (silicon rev 0A) and LPC55S0x, LPC550x (silicon rev 0A) include an undocumented ROM patch peripheral that allows unsigned, non-persistent modification of the internal ROM.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

All versions
nxp-i-mx-rt500 (same device)
All versions
nxp-i-mx-rt600 (same device)
All versions
nxp-lpc5512jbd100 (same device)
All versions
nxp-lpc5512jbd64 (same device)
All versions
nxp-lpc5514jbd100 (same device)
All versions
nxp-lpc5514jbd64 (same device)
All versions
nxp-lpc5516jbd100 (same device)
All versions
nxp-lpc5516jbd64 (same device)
All versions
nxp-lpc5516jev98 (same device)
All versions
nxp-lpc5526 (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_MISCExploitThird Party Advisory
https://oxide.computer/blog/lpc55/
x_refsource_MISCVendor Advisory
https://www.nxp.com

CVSS

Attack Vector
PHYSICAL
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-Other

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