CVE-2021-31532
CVE-2021-31532 is a medium-severity vulnerability in Nxp Lpc55s69jbd100 Firmware with a CVSS 3.x base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: Medium (CVSS 3.x base score 6.8)
- CVSS v2: 4.6
- EPSS exploit prediction: 0% (36th percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Nxp Lpc55s69jbd100 Firmware
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2021-31532?
- 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.
- How severe is CVE-2021-31532?
- CVE-2021-31532 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-31532 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-31532?
- CVE-2021-31532 primarily affects Nxp Lpc55s69jbd100 Firmware. In total, 24 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2021-31532?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-31532 published?
- CVE-2021-31532 was published on 2021-05-06 and last updated on 2026-06-17.
References
Affected products (24)
- cpe:2.3:o:nxp:lpc55s69jbd100_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:nxp:lpc55s66jbd100_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:nxp:lpc55s69jev98_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:nxp:lpcs66jev98_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:nxp:lpc55s69jbd64_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:nxp:lpcs66jbd64_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:nxp:i.mx_rt500_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:nxp:i.mx_rt600_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:nxp:lpc55s28_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:nxp:lpc55s26_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:nxp:lpc5528_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:nxp:lpc5526_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:nxp:lpc55s16jbd100_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:nxp:lpc55s16jev98_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:nxp:lpc55s16jbd64_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:nxp:lpc55s14jbd100_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:nxp:lpc55s14jbd64_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:nxp:lpc5516jbd100_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:nxp:lpc5516jev98_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:nxp:lpc5516jbd64_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:nxp:lpc5514jbd100_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:nxp:lpc5514jbd64_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:nxp:lpc5512jbd100_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:nxp:lpc5512jbd64_firmware:-:*:*:*:*:*:*:*
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