CVE-2021-27417

9.8 criticalEPSS 0.6%

Critical (9.8) in ecoscentric ecospro. EPSS 0.6% chance of exploitation in the next 30 days.

eCosCentric eCosPro RTOS Versions 2.0.1 through 4.5.3 are vulnerable to integer wraparound in function calloc (an implementation of malloc). The unverified memory assignment can lead to arbitrary memory allocation, resulting in a heap-based buffer overflow.

Severity

CVSS 3.1

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.6% chance of exploitation in the next 30 days; higher than 48% of CVEs (scores of 2026-10-31)
CWE: CWE-190
Published: 2022-05-03
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

ecoscentric:ecospro

References

https://bugzilla.ecoscentric.com/show_bug.cgi?id=1002437
https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04
https://bugzilla.ecoscentric.com/show_bug.cgi?id=1002437
https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04

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